21220476592297 has 4 divisors (see below), whose sum is σ = 21225756635280. Its totient is φ = 21215196549316.

The previous prime is 21220476592291. The next prime is 21220476592309. The reversal of 21220476592297 is 79229567402212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21220476592297 - 2³¹ = 21218329108649 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220476592291) 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, 2640015463 + ... + 2640023500.

It is an arithmetic number, because the mean of its divisors is an integer number (5306439158820).

Almost surely, 2^{21220476592297} is an apocalyptic number.

It is an amenable number.

21220476592297 is a deficient number, since it is larger than the sum of its proper divisors (5280042983).

21220476592297 is an equidigital number, since it uses as much as digits as its factorization.

21220476592297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280042982.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 21220476592297 in words is "twenty-one trillion, two hundred twenty billion, four hundred seventy-six million, five hundred ninety-two thousand, two hundred ninety-seven".