122121202020 has 24 divisors (see below), whose sum is σ = 341939365824. Its totient is φ = 32565653856.

The previous prime is 122121202001. The next prime is 122121202033. The reversal of 122121202020 is 20202121221.

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 7 ways as a sum of consecutive naturals, for example, 1017676624 + ... + 1017676743.

It is an arithmetic number, because the mean of its divisors is an integer number (14247473576).

Almost surely, 2^122121202020 is an apocalyptic number.

122121202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121202020 is an abundant number, since it is smaller than the sum of its proper divisors (219818163804).

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

122121202020 is a wasteful number, since it uses less digits than its factorization.

122121202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035353379 (or 2035353377 counting only the distinct ones).

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

Adding to 122121202020 its reverse (20202121221), we get a palindrome (142323323241).

The spelling of 122121202020 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, twenty".