21111102222000 has 160 divisors (see below), whose sum is σ = 77785364227584. Its totient is φ = 4825394784000.

The previous prime is 21111102221981. The next prime is 21111102222011. The reversal of 21111102222000 is 22220111112.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 251280646 + ... + 251364645.

Almost surely, 2^{21111102222000} is an apocalyptic number.

21111102222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111102222000 is an abundant number, since it is smaller than the sum of its proper divisors (56674262005584).

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

21111102222000 is a wasteful number, since it uses less digits than its factorization.

21111102222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502645324 (or 502645308 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21111102222000 its reverse (22220111112), we get a palindrome (21133322333112).

The spelling of 21111102222000 in words is "twenty-one trillion, one hundred eleven billion, one hundred two million, two hundred twenty-two thousand".