121012222020 has 48 divisors (see below), whose sum is σ = 341420764608. Its totient is φ = 32023588480.

The previous prime is 121012221929. The next prime is 121012222039. The reversal of 121012222020 is 20222210121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7690119 + ... + 7705838.

It is an arithmetic number, because the mean of its divisors is an integer number (7112932596).

Almost surely, 2^121012222020 is an apocalyptic number.

121012222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012222020 is an abundant number, since it is smaller than the sum of its proper divisors (220408542588).

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

121012222020 is a wasteful number, since it uses less digits than its factorization.

121012222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396100 (or 15396098 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121012222020 its reverse (20222210121), we get a palindrome (141234432141).

The spelling of 121012222020 in words is "one hundred twenty-one billion, twelve million, two hundred twenty-two thousand, twenty".