2021022121120 has 48 divisors (see below), whose sum is σ = 4777398487008. Its totient is φ = 807945995520.

The previous prime is 2021022121117. The next prime is 2021022121127. The reversal of 2021022121120 is 211212201202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2021022121094 and 2021022121103.

It is not an unprimeable number, because it can be changed into a prime (2021022121127) 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, 3335646 + ... + 3894685.

It is an arithmetic number, because the mean of its divisors is an integer number (99529135146).

Almost surely, 2^{2021022121120} is an apocalyptic number.

2021022121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021022121120 is an abundant number, since it is smaller than the sum of its proper divisors (2756376365888).

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

2021022121120 is a wasteful number, since it uses less digits than its factorization.

2021022121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232093 (or 7232085 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021022121120 its reverse (211212201202), we get a palindrome (2232234322322).

The spelling of 2021022121120 in words is "two trillion, twenty-one billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty".