2112121102020 has 24 divisors (see below), whose sum is σ = 5913939085824. Its totient is φ = 563232293856.

The previous prime is 2112121101977. The next prime is 2112121102027. The reversal of 2112121102020 is 202011212112.

It is a super-2 number, since 2×2112121102020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2112121102027) 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, 17601009124 + ... + 17601009243.

It is an arithmetic number, because the mean of its divisors is an integer number (246414128576).

Almost surely, 2^{2112121102020} is an apocalyptic number.

2112121102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112121102020 is an abundant number, since it is smaller than the sum of its proper divisors (3801817983804).

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

2112121102020 is a wasteful number, since it uses less digits than its factorization.

2112121102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35202018379 (or 35202018377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2112121102020 its reverse (202011212112), we get a palindrome (2314132314132).

The spelling of 2112121102020 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, one hundred two thousand, twenty".