20011021212110 has 64 divisors (see below), whose sum is σ = 38225022014592. Its totient is φ = 7516508553216.

The previous prime is 20011021212103. The next prime is 20011021212137. The reversal of 20011021212110 is 1121212011002.

It is a super-2 number, since 2×20011021212110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329439662 + ... + 329500398.

It is an arithmetic number, because the mean of its divisors is an integer number (597265968978).

Almost surely, 2^{20011021212110} is an apocalyptic number.

20011021212110 is a deficient number, since it is larger than the sum of its proper divisors (18214000802482).

20011021212110 is a wasteful number, since it uses less digits than its factorization.

20011021212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65117.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011021212110 its reverse (1121212011002), we get a palindrome (21132233223112).

The spelling of 20011021212110 in words is "twenty trillion, eleven billion, twenty-one million, two hundred twelve thousand, one hundred ten".