20211000502 has 72 divisors (see below), whose sum is σ = 38838675960. Its totient is φ = 7859174400.

The previous prime is 20211000463. The next prime is 20211000503. The reversal of 20211000502 is 20500011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211000503) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7599649 + ... + 7602307.

It is an arithmetic number, because the mean of its divisors is an integer number (539426055).

Almost surely, 2^20211000502 is an apocalyptic number.

20211000502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20211000502 is a deficient number, since it is larger than the sum of its proper divisors (18627675458).

20211000502 is a wasteful number, since it uses less digits than its factorization.

20211000502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 20211000502 its reverse (20500011202), we get a palindrome (40711011704).

The spelling of 20211000502 in words is "twenty billion, two hundred eleven million, five hundred two", and thus it is an aban number.