121011221021000 has 64 divisors (see below), whose sum is σ = 283322620488960. Its totient is φ = 48377759640000.

The previous prime is 121011221020967. The next prime is 121011221021021. The reversal of 121011221021000 is 120122110121.

It is a super-2 number, since 2×121011221021000² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31599056 + ... + 35221055.

It is an arithmetic number, because the mean of its divisors is an integer number (4426915945140).

Almost surely, 2^{121011221021000} is an apocalyptic number.

121011221021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011221021000 is an abundant number, since it is smaller than the sum of its proper divisors (162311399467960).

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

121011221021000 is a wasteful number, since it uses less digits than its factorization.

121011221021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66821943 (or 66821929 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011221021000 its reverse (120122110121), we get a palindrome (121131343131121).

The spelling of 121011221021000 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-one million, twenty-one thousand".