20210021110 has 64 divisors (see below), whose sum is σ = 38295244800. Its totient is φ = 7664516992.

The previous prime is 20210021059. The next prime is 20210021131. The reversal of 20210021110 is 1112001202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14043771 + ... + 14045209.

It is an arithmetic number, because the mean of its divisors is an integer number (598363200).

Almost surely, 2^20210021110 is an apocalyptic number.

20210021110 is a deficient number, since it is larger than the sum of its proper divisors (18085223690).

20210021110 is a wasteful number, since it uses less digits than its factorization.

20210021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20210021110 its reverse (1112001202), we get a palindrome (21322022312).

The spelling of 20210021110 in words is "twenty billion, two hundred ten million, twenty-one thousand, one hundred ten".