202220109978 has 8 divisors (see below), whose sum is σ = 404440219968. Its totient is φ = 67406703324.

The previous prime is 202220109953. The next prime is 202220109997. The reversal of 202220109978 is 879901022202.

It is a sphenic number, since it is the product of 3 distinct primes.

202220109978 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16851675826 + ... + 16851675837.

It is an arithmetic number, because the mean of its divisors is an integer number (50555027496).

Almost surely, 2^202220109978 is an apocalyptic number.

202220109978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

202220109978 is a wasteful number, since it uses less digits than its factorization.

202220109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33703351668.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 202220109978 in words is "two hundred two billion, two hundred twenty million, one hundred nine thousand, nine hundred seventy-eight".