121202122020 has 96 divisors (see below), whose sum is σ = 388747247616. Its totient is φ = 27639024000.

The previous prime is 121202122003. The next prime is 121202122037. The reversal of 121202122020 is 20221202121.

121202122020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121202122003) and next prime (121202122037).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153756 + ... + 515795.

It is an arithmetic number, because the mean of its divisors is an integer number (4049450496).

Almost surely, 2^121202122020 is an apocalyptic number.

121202122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202122020 is an abundant number, since it is smaller than the sum of its proper divisors (267545125596).

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

121202122020 is a wasteful number, since it uses less digits than its factorization.

121202122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670001 (or 669999 counting only the distinct ones).

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

Adding to 121202122020 its reverse (20221202121), we get a palindrome (141423324141).

The spelling of 121202122020 in words is "one hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, twenty".