221010111222000 has 160 divisors (see below), whose sum is σ = 737106826697280. Its totient is φ = 56903752729600.

The previous prime is 221010111221989. The next prime is 221010111222001. The reversal of 221010111222000 is 222111010122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010111222001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 634912527 + ... + 635260526.

It is an arithmetic number, because the mean of its divisors is an integer number (4606917666858).

Almost surely, 2^{221010111222000} is an apocalyptic number.

221010111222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010111222000 is an abundant number, since it is smaller than the sum of its proper divisors (516096715475280).

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

221010111222000 is a wasteful number, since it uses less digits than its factorization.

221010111222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270173108 (or 1270173092 counting only the distinct ones).

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

Adding to 221010111222000 its reverse (222111010122), we get a palindrome (221232222232122).

The spelling of 221010111222000 in words is "two hundred twenty-one trillion, ten billion, one hundred eleven million, two hundred twenty-two thousand".