121202002020 has 96 divisors (see below), whose sum is σ = 382983189120. Its totient is φ = 28369116160.

The previous prime is 121202001989. The next prime is 121202002067. The reversal of 121202002020 is 20200202121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121202001987 and 121202002005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3147057 + ... + 3185336.

It is an arithmetic number, because the mean of its divisors is an integer number (3989408220).

Almost surely, 2^121202002020 is an apocalyptic number.

121202002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202002020 is an abundant number, since it is smaller than the sum of its proper divisors (261781187100).

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

121202002020 is a wasteful number, since it uses less digits than its factorization.

121202002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332445 (or 6332443 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 121202002020 its reverse (20200202121), we get a palindrome (141402204141).

The spelling of 121202002020 in words is "one hundred twenty-one billion, two hundred two million, two thousand, twenty".