20952273001 has 9 divisors (see below), whose sum is σ = 23031934653. Its totient is φ = 19046073420.

The previous prime is 20952272987. The next prime is 20952273007. The reversal of 20952273001 is 10037225902.

The square root of 20952273001 is 144749.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 20952273001 - 2²³ = 20943884393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20952273007) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1585660 + ... + 1598818.

Almost surely, 2^20952273001 is an apocalyptic number.

20952273001 is the 144749-th square number.

20952273001 is the 72375-th centered octagonal number.

It is an amenable number.

20952273001 is a deficient number, since it is larger than the sum of its proper divisors (2079661652).

20952273001 is an frugal number, since it uses more digits than its factorization.

20952273001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26340 (or 13170 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 20952273001 its reverse (10037225902), we get a palindrome (30989498903).

The spelling of 20952273001 in words is "twenty billion, nine hundred fifty-two million, two hundred seventy-three thousand, one".