20898224207 has 4 divisors (see below), whose sum is σ = 23883684816. Its totient is φ = 17912763600.

The previous prime is 20898224177. The next prime is 20898224213. The reversal of 20898224207 is 70242289802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70242289802 = 2 ⋅35121144901.

It is a cyclic number.

It is not a de Polignac number, because 20898224207 - 2²² = 20894029903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898224257) 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, 1492730294 + ... + 1492730307.

It is an arithmetic number, because the mean of its divisors is an integer number (5970921204).

Almost surely, 2^20898224207 is an apocalyptic number.

20898224207 is a deficient number, since it is larger than the sum of its proper divisors (2985460609).

20898224207 is an equidigital number, since it uses as much as digits as its factorization.

20898224207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985460608.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 20898224207 in words is "twenty billion, eight hundred ninety-eight million, two hundred twenty-four thousand, two hundred seven".