21022000211100 has 144 divisors (see below), whose sum is σ = 69522277733888. Its totient is φ = 4804369839360.

The previous prime is 21022000211021. The next prime is 21022000211119. The reversal of 21022000211100 is 111200022012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14716737 + ... + 16081863.

Almost surely, 2^{21022000211100} is an apocalyptic number.

21022000211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022000211100 is an abundant number, since it is smaller than the sum of its proper divisors (48500277522788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022000211100 is a wasteful number, since it uses less digits than its factorization.

21022000211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372484 (or 1372477 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21022000211100 its reverse (111200022012), we get a palindrome (21133200233112).

The spelling of 21022000211100 in words is "twenty-one trillion, twenty-two billion, two hundred eleven thousand, one hundred".