20102110112121 has 8 divisors (see below), whose sum is σ = 26804025874560. Its totient is φ = 13400800545552.

The previous prime is 20102110112107. The next prime is 20102110112129. The reversal of 20102110112121 is 12121101120102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20102110112121 - 2³⁹ = 19552354298233 is a prime.

It is a super-2 number, since 2×20102110112121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20102110112121.

It is not an unprimeable number, because it can be changed into a prime (20102110112129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151471585 + ... + 151604238.

It is an arithmetic number, because the mean of its divisors is an integer number (3350503234320).

Almost surely, 2^{20102110112121} is an apocalyptic number.

It is an amenable number.

20102110112121 is a deficient number, since it is larger than the sum of its proper divisors (6701915762439).

20102110112121 is a wasteful number, since it uses less digits than its factorization.

20102110112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303097935.

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

Adding to 20102110112121 its reverse (12121101120102), we get a palindrome (32223211232223).

The spelling of 20102110112121 in words is "twenty trillion, one hundred two billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-one".