10021972601 has 4 divisors (see below), whose sum is σ = 10022512500. Its totient is φ = 10021432704.

The previous prime is 10021972577. The next prime is 10021972603. The reversal of 10021972601 is 10627912001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3898753600 + 6123219001 = 62440^2 + 78251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021972601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021972603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241076 + ... + 279573.

It is an arithmetic number, because the mean of its divisors is an integer number (2505628125).

Almost surely, 2^10021972601 is an apocalyptic number.

It is an amenable number.

10021972601 is a deficient number, since it is larger than the sum of its proper divisors (539899).

10021972601 is an equidigital number, since it uses as much as digits as its factorization.

10021972601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539898.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 10021972601 in words is "ten billion, twenty-one million, nine hundred seventy-two thousand, six hundred one".