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10102012001 = 18155812221
BaseRepresentation
bin10010110100010000…
…00111100001100001
3222002000201101021122
421122020013201201
5131142103341001
64350225102025
7505223454014
oct113210074141
928060641248
1010102012001
114314360154
121b5b187915
13c4cb869c3
146bb91937b
153e1d0db1b
hex25a207861

10102012001 has 4 divisors (see below), whose sum is σ = 10157824404. Its totient is φ = 10046199600.

The previous prime is 10102011977. The next prime is 10102012013. The reversal of 10102012001 is 10021020101.

Adding to 10102012001 its reverse (10021020101), we get a palindrome (20123032102).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2311301776 + 7790710225 = 48076^2 + 88265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10102012001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10102012001.

It is not an unprimeable number, because it can be changed into a prime (10102012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27905930 + ... + 27906291.

It is an arithmetic number, because the mean of its divisors is an integer number (2539456101).

Almost surely, 210102012001 is an apocalyptic number.

It is an amenable number.

10102012001 is a deficient number, since it is larger than the sum of its proper divisors (55812403).

10102012001 is an equidigital number, since it uses as much as digits as its factorization.

10102012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55812402.

The product of its (nonzero) digits is 4, while the sum is 8.

The spelling of 10102012001 in words is "ten billion, one hundred two million, twelve thousand, one".

Divisors: 1 181 55812221 10102012001