20210121021112 has 64 divisors (see below), whose sum is σ = 41443260163200. Its totient is φ = 9163230003840.

The previous prime is 20210121021071. The next prime is 20210121021119. The reversal of 20210121021112 is 21112012101202.

It is a super-3 number, since 3×20210121021112³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210121021119) 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 15 ways as a sum of consecutive naturals, for example, 299477518 + ... + 299544994.

It is an arithmetic number, because the mean of its divisors is an integer number (647550940050).

Almost surely, 2^{20210121021112} is an apocalyptic number.

20210121021112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20210121021112 is an abundant number, since it is smaller than the sum of its proper divisors (21233139142088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20210121021112 is a wasteful number, since it uses less digits than its factorization.

20210121021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76036 (or 76032 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20210121021112 its reverse (21112012101202), we get a palindrome (41322133122314).

The spelling of 20210121021112 in words is "twenty trillion, two hundred ten billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".