22111220222010 has 48 divisors (see below), whose sum is σ = 57636959744520. Its totient is φ = 5881167734400.

The previous prime is 22111220221997. The next prime is 22111220222051. The reversal of 22111220222010 is 1022202211122.

It is a happy number.

22111220222010 is a `hidden beast` number, since 2 + 211 + 1 + 220 + 2 + 220 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19899155957409 + 2212064264601 = 4460847^2 + 1487301^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315749341 + ... + 315819360.

Almost surely, 2^{22111220222010} is an apocalyptic number.

22111220222010 is an abundant number, since it is smaller than the sum of its proper divisors (35525739522510).

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

22111220222010 is a wasteful number, since it uses less digits than its factorization.

22111220222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631569103 (or 631569100 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22111220222010 its reverse (1022202211122), we get a palindrome (23133422433132).

The spelling of 22111220222010 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, ten".