20020112010121 has 16 divisors (see below), whose sum is σ = 20570999137920. Its totient is φ = 19472234385280.

The previous prime is 20020112010113. The next prime is 20020112010131. The reversal of 20020112010121 is 12101021102002.

It is a cyclic number.

It is not a de Polignac number, because 20020112010121 - 2³ = 20020112010113 is a prime.

It is a super-2 number, since 2×20020112010121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020112010131) 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, 55797531 + ... + 56155183.

It is an arithmetic number, because the mean of its divisors is an integer number (1285687446120).

Almost surely, 2^{20020112010121} is an apocalyptic number.

It is an amenable number.

20020112010121 is a deficient number, since it is larger than the sum of its proper divisors (550887127799).

20020112010121 is a wasteful number, since it uses less digits than its factorization.

20020112010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361856.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20020112010121 its reverse (12101021102002), we get a palindrome (32121133112123).

The spelling of 20020112010121 in words is "twenty trillion, twenty billion, one hundred twelve million, ten thousand, one hundred twenty-one".