121011102012020 has 24 divisors (see below), whose sum is σ = 277225433700768. Its totient is φ = 44004037095200.

The previous prime is 121011102011999. The next prime is 121011102012071. The reversal of 121011102012020 is 20210201110121.

It is a junction number, because it is equal to n+sod(n) for n = 121011102011986 and 121011102012004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275025231626 + ... + 275025232065.

It is an arithmetic number, because the mean of its divisors is an integer number (11551059737532).

Almost surely, 2^{121011102012020} is an apocalyptic number.

121011102012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011102012020 is an abundant number, since it is smaller than the sum of its proper divisors (156214331688748).

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

121011102012020 is a wasteful number, since it uses less digits than its factorization.

121011102012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550050463711 (or 550050463709 counting only the distinct ones).

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

Adding to 121011102012020 its reverse (20210201110121), we get a palindrome (141221303122141).

The spelling of 121011102012020 in words is "one hundred twenty-one trillion, eleven billion, one hundred two million, twelve thousand, twenty".