20032212457 has 8 divisors (see below), whose sum is σ = 20909179584. Its totient is φ = 19155745488.

The previous prime is 20032212443. The next prime is 20032212517. The reversal of 20032212457 is 75421223002.

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

It is a cyclic number.

It is not a de Polignac number, because 20032212457 - 2¹⁹ = 20031688169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20032212407) 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, 42003 + ... + 204520.

It is an arithmetic number, because the mean of its divisors is an integer number (2613647448).

Almost surely, 2^20032212457 is an apocalyptic number.

It is an amenable number.

20032212457 is a deficient number, since it is larger than the sum of its proper divisors (876967127).

20032212457 is a wasteful number, since it uses less digits than its factorization.

20032212457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250079.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 20032212457 its reverse (75421223002), we get a palindrome (95453435459).

It can be divided in two parts, 2003 and 2212457, that added together give a triangular number (2214460 = T₂₁₀₄).

The spelling of 20032212457 in words is "twenty billion, thirty-two million, two hundred twelve thousand, four hundred fifty-seven".