20021000210 has 64 divisors (see below), whose sum is σ = 38236520448. Its totient is φ = 7532378304.

The previous prime is 20021000201. The next prime is 20021000267. The reversal of 20021000210 is 1200012002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4254719 + ... + 4259421.

It is an arithmetic number, because the mean of its divisors is an integer number (597445632).

Almost surely, 2^20021000210 is an apocalyptic number.

20021000210 is a deficient number, since it is larger than the sum of its proper divisors (18215520238).

20021000210 is a wasteful number, since it uses less digits than its factorization.

20021000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20021000210 its reverse (1200012002), we get a palindrome (21221012212).

The spelling of 20021000210 in words is "twenty billion, twenty-one million, two hundred ten", and thus it is an aban number.