20022112121 has 12 divisors (see below), whose sum is σ = 22095490032. Its totient is φ = 18129375000.

The previous prime is 20022112091. The next prime is 20022112141. The reversal of 20022112121 is 12121122002.

It is not a de Polignac number, because 20022112121 - 2³⁰ = 18948370297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022112096 and 20022112105.

It is not an unprimeable number, because it can be changed into a prime (20022112141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299255 + ... + 359996.

It is an arithmetic number, because the mean of its divisors is an integer number (1841290836).

Almost surely, 2^20022112121 is an apocalyptic number.

It is an amenable number.

20022112121 is a deficient number, since it is larger than the sum of its proper divisors (2073377911).

20022112121 is a wasteful number, since it uses less digits than its factorization.

20022112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659524 (or 659513 counting only the distinct ones).

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

Adding to 20022112121 its reverse (12121122002), we get a palindrome (32143234123).

The spelling of 20022112121 in words is "twenty billion, twenty-two million, one hundred twelve thousand, one hundred twenty-one".