111202120010121 has 16 divisors (see below), whose sum is σ = 169581096198528. Its totient is φ = 63495226080000.

The previous prime is 111202120010117. The next prime is 111202120010147. The reversal of 111202120010121 is 121010021202111.

It is a happy number.

It is not a de Polignac number, because 111202120010121 - 2² = 111202120010117 is a prime.

It is a super-2 number, since 2×111202120010121² (a number of 29 digits) contains 22 as substring.

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 111202120010121.

It is not an unprimeable number, because it can be changed into a prime (111202120010621) 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, 2035076080 + ... + 2035130721.

It is an arithmetic number, because the mean of its divisors is an integer number (10598818512408).

Almost surely, 2^{111202120010121} is an apocalyptic number.

It is an amenable number.

111202120010121 is a deficient number, since it is larger than the sum of its proper divisors (58378976188407).

111202120010121 is a wasteful number, since it uses less digits than its factorization.

111202120010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070208112.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111202120010121 its reverse (121010021202111), we get a palindrome (232212141212232).

The spelling of 111202120010121 in words is "one hundred eleven trillion, two hundred two billion, one hundred twenty million, ten thousand, one hundred twenty-one".