121122020111220 has 60 divisors (see below), whose sum is σ = 379964263094724. Its totient is φ = 32299205362560.

The previous prime is 121122020111219. The next prime is 121122020111221. The reversal of 121122020111220 is 22111020221121.

121122020111220 is a `hidden beast` number, since 1 + 2 + 11 + 220 + 201 + 11 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (121122020111219) and next prime (121122020111221).

It can be written as a sum of positive squares in 2 ways, for example, as 88885901796624 + 32236118314596 = 9427932^2 + 5677686^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121122020111193 and 121122020111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122020111221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37383337921 + ... + 37383341160.

Almost surely, 2^{121122020111220} is an apocalyptic number.

121122020111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122020111220 is an abundant number, since it is smaller than the sum of its proper divisors (258842242983504).

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

121122020111220 is a wasteful number, since it uses less digits than its factorization.

121122020111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74766679102 (or 74766679091 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121122020111220 its reverse (22111020221121), we get a palindrome (143233040332341).

The spelling of 121122020111220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty million, one hundred eleven thousand, two hundred twenty".