121021222122020 has 24 divisors (see below), whose sum is σ = 277248617952768. Its totient is φ = 44007717135200.

The previous prime is 121021222121971. The next prime is 121021222122067. The reversal of 121021222122020 is 20221222120121.

It is a super-2 number, since 2×121021222122020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121021222121983 and 121021222122001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275048231876 + ... + 275048232315.

It is an arithmetic number, because the mean of its divisors is an integer number (11552025748032).

Almost surely, 2^{121021222122020} is an apocalyptic number.

121021222122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021222122020 is an abundant number, since it is smaller than the sum of its proper divisors (156227395830748).

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

121021222122020 is a wasteful number, since it uses less digits than its factorization.

121021222122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550096464211 (or 550096464209 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121021222122020 its reverse (20221222120121), we get a palindrome (141242444242141).

The spelling of 121021222122020 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty".