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BaseRepresentation
bin101110101010110010…
…1110000111110110001
3100120200112000020010011
41131111211300332301
53120222333223441
6114012430534521
710145356511302
oct1352545607661
9316615006104
10100220211121
1139559772a68
121750b667441
1395b2322294
144bca3c47a9
152918737581
hex1755970fb1

100220211121 has 4 divisors (see below), whose sum is σ = 103676080500. Its totient is φ = 96764341744.

The previous prime is 100220211103. The next prime is 100220211137. The reversal of 100220211121 is 121112022001.

Adding to 100220211121 its reverse (121112022001), we get a palindrome (221332233122).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121112022001 = 235265740087.

It can be written as a sum of positive squares in 2 ways, for example, as 40957664400 + 59262546721 = 202380^2 + 243439^2 .

It is a cyclic number.

It is not a de Polignac number, because 100220211121 - 29 = 100220210609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100220211151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727934646 + ... + 1727934703.

It is an arithmetic number, because the mean of its divisors is an integer number (25919020125).

Almost surely, 2100220211121 is an apocalyptic number.

It is an amenable number.

100220211121 is a deficient number, since it is larger than the sum of its proper divisors (3455869379).

100220211121 is an equidigital number, since it uses as much as digits as its factorization.

100220211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455869378.

The product of its (nonzero) digits is 16, while the sum is 13.

The spelling of 100220211121 in words is "one hundred billion, two hundred twenty million, two hundred eleven thousand, one hundred twenty-one".

Divisors: 1 29 3455869349 100220211121