10221109972 has 24 divisors (see below), whose sum is σ = 18584584200. Its totient is φ = 4912768896.

The previous prime is 10221109853. The next prime is 10221109973. The reversal of 10221109972 is 27990112201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4850565316 + 5370544656 = 69646^2 + 73284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221109973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165823 + ... + 218950.

It is an arithmetic number, because the mean of its divisors is an integer number (774357675).

Almost surely, 2^10221109972 is an apocalyptic number.

It is an amenable number.

10221109972 is a deficient number, since it is larger than the sum of its proper divisors (8363474228).

10221109972 is a wasteful number, since it uses less digits than its factorization.

10221109972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385035 (or 385033 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 10221109972 in words is "ten billion, two hundred twenty-one million, one hundred nine thousand, nine hundred seventy-two".