121101220131020 has 12 divisors (see below), whose sum is σ = 254312562275184. Its totient is φ = 48440488052400.

The previous prime is 121101220131013. The next prime is 121101220131029. The reversal of 121101220131020 is 20131022101121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121101220131020.

It is not an unprimeable number, because it can be changed into a prime (121101220131029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027530503256 + ... + 3027530503295.

It is an arithmetic number, because the mean of its divisors is an integer number (21192713522932).

Almost surely, 2^{121101220131020} is an apocalyptic number.

121101220131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101220131020 is an abundant number, since it is smaller than the sum of its proper divisors (133211342144164).

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

121101220131020 is a wasteful number, since it uses less digits than its factorization.

121101220131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055061006560 (or 6055061006558 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121101220131020 its reverse (20131022101121), we get a palindrome (141232242232141).

The spelling of 121101220131020 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty million, one hundred thirty-one thousand, twenty".