21102211222000 has 40 divisors (see below), whose sum is σ = 51025146739632. Its totient is φ = 8440884488000.

The previous prime is 21102211221953. The next prime is 21102211222061. The reversal of 21102211222000 is 22211220112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5275550806 + ... + 5275554805.

Almost surely, 2^{21102211222000} is an apocalyptic number.

21102211222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102211222000 is an abundant number, since it is smaller than the sum of its proper divisors (29922935517632).

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

21102211222000 is a wasteful number, since it uses less digits than its factorization.

21102211222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551105634 (or 10551105618 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21102211222000 its reverse (22211220112), we get a palindrome (21124422442112).

The spelling of 21102211222000 in words is "twenty-one trillion, one hundred two billion, two hundred eleven million, two hundred twenty-two thousand".