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211010102101 = 229979917519
BaseRepresentation
bin1100010010000100101…
…1101010001101010101
3202011122122201211012201
43010201023222031111
511424122041231401
6240534154444501
721150012163021
oct3044113521525
9664578654181
10211010102101
1181541779937
1234a8aa33731
1316b8a3729a6
14a2da461381
15574ed5bb01
hex31212ea355

211010102101 has 4 divisors (see below), whose sum is σ = 211011249600. Its totient is φ = 211008954604.

The previous prime is 211010102081. The next prime is 211010102113. The reversal of 211010102101 is 101201010112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211010102101 - 235 = 176650363733 is a prime.

It is a super-2 number, since 2×2110101021012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228781 + ... + 688738.

It is an arithmetic number, because the mean of its divisors is an integer number (52752812400).

Almost surely, 2211010102101 is an apocalyptic number.

It is an amenable number.

211010102101 is a deficient number, since it is larger than the sum of its proper divisors (1147499).

211010102101 is an equidigital number, since it uses as much as digits as its factorization.

211010102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147498.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211010102101 its reverse (101201010112), we get a palindrome (312211112213).

The spelling of 211010102101 in words is "two hundred eleven billion, ten million, one hundred two thousand, one hundred one".

Divisors: 1 229979 917519 211010102101