20002220523 has 24 divisors (see below), whose sum is σ = 29202250896. Its totient is φ = 13191782400.

The previous prime is 20002220521. The next prime is 20002220561. The reversal of 20002220523 is 32502220002.

It is not a de Polignac number, because 20002220523 - 2¹ = 20002220521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002220496 and 20002220505.

It is not an unprimeable number, because it can be changed into a prime (20002220521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3673483 + ... + 3678923.

It is an arithmetic number, because the mean of its divisors is an integer number (1216760454).

Almost surely, 2^20002220523 is an apocalyptic number.

20002220523 is a deficient number, since it is larger than the sum of its proper divisors (9200030373).

20002220523 is a wasteful number, since it uses less digits than its factorization.

20002220523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755 (or 9752 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

Adding to 20002220523 its reverse (32502220002), we get a palindrome (52504440525).

The spelling of 20002220523 in words is "twenty billion, two million, two hundred twenty thousand, five hundred twenty-three".