102202221112121 has 16 divisors (see below), whose sum is σ = 116012700128640. Its totient is φ = 89254931875200.

The previous prime is 102202221112097. The next prime is 102202221112133. The reversal of 102202221112121 is 121211122202201.

It is a de Polignac number, because none of the positive numbers 2^k-102202221112121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202221112093 and 102202221112102.

It is not an unprimeable number, because it can be changed into a prime (102202221112171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278264780 + ... + 278631821.

It is an arithmetic number, because the mean of its divisors is an integer number (7250793758040).

Almost surely, 2^{102202221112121} is an apocalyptic number.

It is an amenable number.

102202221112121 is a deficient number, since it is larger than the sum of its proper divisors (13810479016519).

102202221112121 is a wasteful number, since it uses less digits than its factorization.

102202221112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556897376.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102202221112121 its reverse (121211122202201), we get a palindrome (223413343314322).

The spelling of 102202221112121 in words is "one hundred two trillion, two hundred two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".