121010121011020 has 96 divisors (see below), whose sum is σ = 257216144879232. Its totient is φ = 47818637088768.

The previous prime is 121010121010993. The next prime is 121010121011053. The reversal of 121010121011020 is 20110121010121.

It is a happy number.

It is a super-2 number, since 2×121010121011020² (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 31 ways as a sum of consecutive naturals, for example, 616429122 + ... + 616625398.

It is an arithmetic number, because the mean of its divisors is an integer number (2679334842492).

Almost surely, 2^{121010121011020} is an apocalyptic number.

121010121011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010121011020 is an abundant number, since it is smaller than the sum of its proper divisors (136206023868212).

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

121010121011020 is a wasteful number, since it uses less digits than its factorization.

121010121011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197587 (or 197585 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010121011020 its reverse (20110121010121), we get a palindrome (141120242021141).

The spelling of 121010121011020 in words is "one hundred twenty-one trillion, ten billion, one hundred twenty-one million, eleven thousand, twenty".