21100022211000 has 128 divisors (see below), whose sum is σ = 66483872919360. Its totient is φ = 5570962880000.

The previous prime is 21100022210957. The next prime is 21100022211071. The reversal of 21100022211000 is 11222000112.

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 31 ways as a sum of consecutive naturals, for example, 34515519 + ... + 35121518.

Almost surely, 2^{21100022211000} is an apocalyptic number.

21100022211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21100022211000 is an abundant number, since it is smaller than the sum of its proper divisors (45383850708360).

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

21100022211000 is a wasteful number, since it uses less digits than its factorization.

21100022211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69637162 (or 69637148 counting only the distinct ones).

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

Adding to 21100022211000 its reverse (11222000112), we get a palindrome (21111244211112).

The spelling of 21100022211000 in words is "twenty-one trillion, one hundred billion, twenty-two million, two hundred eleven thousand".