20100120022121 has 8 divisors (see below), whose sum is σ = 20186598481920. Its totient is φ = 20013643373472.

The previous prime is 20100120022097. The next prime is 20100120022123. The reversal of 20100120022121 is 12122002100102.

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

It is a cyclic number.

It is not a de Polignac number, because 20100120022121 - 2³⁸ = 19825242115177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100120022096 and 20100120022105.

It is not an unprimeable number, because it can be changed into a prime (20100120022123) 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, 24817400 + ... + 25614518.

It is an arithmetic number, because the mean of its divisors is an integer number (2523324810240).

Almost surely, 2^{20100120022121} is an apocalyptic number.

It is an amenable number.

20100120022121 is a deficient number, since it is larger than the sum of its proper divisors (86478459799).

20100120022121 is a wasteful number, since it uses less digits than its factorization.

20100120022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905575.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20100120022121 its reverse (12122002100102), we get a palindrome (32222122122223).

The spelling of 20100120022121 in words is "twenty trillion, one hundred billion, one hundred twenty million, twenty-two thousand, one hundred twenty-one".