121021020222000 has 80 divisors (see below), whose sum is σ = 390171769215072. Its totient is φ = 32272272057600.

The previous prime is 121021020221989. The next prime is 121021020222077. The reversal of 121021020222000 is 222020120121.

It is a tau number, because it is divible by the number of its divisors (80).

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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10085079019 + ... + 10085091018.

Almost surely, 2^{121021020222000} is an apocalyptic number.

121021020222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021020222000 is an abundant number, since it is smaller than the sum of its proper divisors (269150748993072).

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

121021020222000 is a wasteful number, since it uses less digits than its factorization.

121021020222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20170170063 (or 20170170047 counting only the distinct ones).

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

Adding to 121021020222000 its reverse (222020120121), we get a palindrome (121243040342121).

The spelling of 121021020222000 in words is "one hundred twenty-one trillion, twenty-one billion, twenty million, two hundred twenty-two thousand".