21022101211100 has 36 divisors (see below), whose sum is σ = 49765046869608. Its totient is φ = 7644400440000.

The previous prime is 21022101211091. The next prime is 21022101211129. The reversal of 21022101211100 is 111210122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9555499451 + ... + 9555501650.

Almost surely, 2^{21022101211100} is an apocalyptic number.

21022101211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022101211100 is an abundant number, since it is smaller than the sum of its proper divisors (28742945658508).

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

21022101211100 is a wasteful number, since it uses less digits than its factorization.

21022101211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19111001126 (or 19111001119 counting only the distinct ones).

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

Adding to 21022101211100 its reverse (111210122012), we get a palindrome (21133311333112).

The spelling of 21022101211100 in words is "twenty-one trillion, twenty-two billion, one hundred one million, two hundred eleven thousand, one hundred".