121122022012020 has 96 divisors (see below), whose sum is σ = 377059439111040. Its totient is φ = 32279031244800.

The previous prime is 121122022011973. The next prime is 121122022012021. The reversal of 121122022012020 is 20210220221121.

It is a happy number.

121122022012020 is a `hidden beast` number, since 1 + 21 + 1 + 220 + 220 + 1 + 202 + 0 = 666.

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 = 121122022011984 and 121122022012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122022012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69185442 + ... + 70914521.

It is an arithmetic number, because the mean of its divisors is an integer number (3927702490740).

Almost surely, 2^{121122022012020} is an apocalyptic number.

121122022012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122022012020 is an abundant number, since it is smaller than the sum of its proper divisors (255937417099020).

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

121122022012020 is a wasteful number, since it uses less digits than its factorization.

121122022012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140101582 (or 140101574 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121122022012020 its reverse (20210220221121), we get a palindrome (141332242233141).

The spelling of 121122022012020 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-two million, twelve thousand, twenty".