10221101119978 has 64 divisors (see below), whose sum is σ = 18029971491840. Its totient is φ = 4254656515200.

The previous prime is 10221101119969. The next prime is 10221101119979. The reversal of 10221101119978 is 87991110112201.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (10221101119979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82997013 + ... + 83120071.

It is an arithmetic number, because the mean of its divisors is an integer number (281718304560).

Almost surely, 2^{10221101119978} is an apocalyptic number.

10221101119978 is a deficient number, since it is larger than the sum of its proper divisors (7808870371862).

10221101119978 is a wasteful number, since it uses less digits than its factorization.

10221101119978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123883.

The product of its (nonzero) digits is 18144, while the sum is 43.

The spelling of 10221101119978 in words is "ten trillion, two hundred twenty-one billion, one hundred one million, one hundred nineteen thousand, nine hundred seventy-eight".