20122102112121 has 24 divisors (see below), whose sum is σ = 29118805077024. Its totient is φ = 13390030610880.

The previous prime is 20122102112069. The next prime is 20122102112173. The reversal of 20122102112121 is 12121120122102.

20122102112121 is a `hidden beast` number, since 20 + 1 + 221 + 0 + 211 + 212 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20122102112069) and next prime (20122102112173).

It is not a de Polignac number, because 20122102112121 - 2⁹ = 20122102111609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20122102112094 and 20122102112103.

It is not an unprimeable number, because it can be changed into a prime (20122102112521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24851026 + ... + 25647956.

It is an arithmetic number, because the mean of its divisors is an integer number (1213283544876).

Almost surely, 2^{20122102112121} is an apocalyptic number.

It is an amenable number.

20122102112121 is a deficient number, since it is larger than the sum of its proper divisors (8996702964903).

20122102112121 is a wasteful number, since it uses less digits than its factorization.

20122102112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802101 (or 802098 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20122102112121 its reverse (12121120122102), we get a palindrome (32243222234223).

The spelling of 20122102112121 in words is "twenty trillion, one hundred twenty-two billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".