121000111212020 has 24 divisors (see below), whose sum is σ = 256475002087584. Its totient is φ = 47947707619616.

The previous prime is 121000111212011. The next prime is 121000111212041. The reversal of 121000111212020 is 20212111000121.

It is a super-2 number, since 2×121000111212020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121000111211986 and 121000111212004.

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, 28271051882 + ... + 28271056161.

It is an arithmetic number, because the mean of its divisors is an integer number (10686458420316).

Almost surely, 2^{121000111212020} is an apocalyptic number.

121000111212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000111212020 is an abundant number, since it is smaller than the sum of its proper divisors (135474890875564).

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

121000111212020 is a wasteful number, since it uses less digits than its factorization.

121000111212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56542108159 (or 56542108157 counting only the distinct ones).

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

Adding to 121000111212020 its reverse (20212111000121), we get a palindrome (141212222212141).

The spelling of 121000111212020 in words is "one hundred twenty-one trillion, one hundred eleven million, two hundred twelve thousand, twenty".