202220001111978 has 128 divisors (see below), whose sum is σ = 480591198259200. Its totient is φ = 62844071325696.

The previous prime is 202220001111971. The next prime is 202220001111979. The reversal of 202220001111978 is 879111100022202.

It is not an unprimeable number, because it can be changed into a prime (202220001111971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17265675 + ... + 26505537.

It is an arithmetic number, because the mean of its divisors is an integer number (3754618736400).

Almost surely, 2^{202220001111978} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202220001111978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240295599129600).

202220001111978 is an abundant number, since it is smaller than the sum of its proper divisors (278371197147222).

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

202220001111978 is a wasteful number, since it uses less digits than its factorization.

202220001111978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240233 (or 9240227 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 202220001111978 in words is "two hundred two trillion, two hundred twenty billion, one million, one hundred eleven thousand, nine hundred seventy-eight".