121021010020220 has 12 divisors (see below), whose sum is σ = 254144121042504. Its totient is φ = 48408404008080.

The previous prime is 121021010020213. The next prime is 121021010020243. The reversal of 121021010020220 is 22020010120121.

It is a junction number, because it is equal to n+sod(n) for n = 121021010020195 and 121021010020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025525250486 + ... + 3025525250525.

It is an arithmetic number, because the mean of its divisors is an integer number (21178676753542).

Almost surely, 2^{121021010020220} is an apocalyptic number.

121021010020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021010020220 is an abundant number, since it is smaller than the sum of its proper divisors (133123111022284).

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

121021010020220 is a wasteful number, since it uses less digits than its factorization.

121021010020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051050501020 (or 6051050501018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121021010020220 its reverse (22020010120121), we get a palindrome (143041020140341).

Subtracting from 121021010020220 its reverse (22020010120121), we obtain a palindrome (99000999900099).

The spelling of 121021010020220 in words is "one hundred twenty-one trillion, twenty-one billion, ten million, twenty thousand, two hundred twenty".