121020200122020 has 96 divisors (see below), whose sum is σ = 340901347248000. Its totient is φ = 32077624126464.

The previous prime is 121020200122009. The next prime is 121020200122051. The reversal of 121020200122020 is 20221002020121.

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 31 ways as a sum of consecutive naturals, for example, 7519011 + ... + 17279349.

It is an arithmetic number, because the mean of its divisors is an integer number (3551055700500).

Almost surely, 2^{121020200122020} is an apocalyptic number.

121020200122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020200122020 is an abundant number, since it is smaller than the sum of its proper divisors (219881147125980).

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

121020200122020 is a wasteful number, since it uses less digits than its factorization.

121020200122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761597 (or 9761595 counting only the distinct ones).

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

Adding to 121020200122020 its reverse (20221002020121), we get a palindrome (141241202142141).

The spelling of 121020200122020 in words is "one hundred twenty-one trillion, twenty billion, two hundred million, one hundred twenty-two thousand, twenty".