121122200000020 has 48 divisors (see below), whose sum is σ = 267750584841600. Its totient is φ = 45897777636480.

The previous prime is 121122199999981. The next prime is 121122200000051. The reversal of 121122200000020 is 20000002221121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11080750 + ... + 19105690.

It is an arithmetic number, because the mean of its divisors is an integer number (5578137184200).

Almost surely, 2^{121122200000020} is an apocalyptic number.

121122200000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122200000020 is an abundant number, since it is smaller than the sum of its proper divisors (146628384841580).

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

121122200000020 is a wasteful number, since it uses less digits than its factorization.

121122200000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064688 (or 8064686 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121122200000020 its reverse (20000002221121), we get a palindrome (141122202221141).

The spelling of 121122200000020 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred million, twenty", and thus it is an aban number.