222211011021210 has 128 divisors (see below), whose sum is σ = 618355431682560. Its totient is φ = 56677238880768.

The previous prime is 222211011021137. The next prime is 222211011021257. The reversal of 222211011021210 is 12120110112222.

222211011021210 is a `hidden beast` number, since 2 + 222 + 110 + 110 + 212 + 10 = 666.

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 63 ways as a sum of consecutive naturals, for example, 132639102 + ... + 134303958.

It is an arithmetic number, because the mean of its divisors is an integer number (4830901810020).

Almost surely, 2^{222211011021210} is an apocalyptic number.

222211011021210 is an abundant number, since it is smaller than the sum of its proper divisors (396144420661350).

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

222211011021210 is a wasteful number, since it uses less digits than its factorization.

222211011021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686389 (or 1686383 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222211011021210 its reverse (12120110112222), we get a palindrome (234331121133432).

The spelling of 222211011021210 in words is "two hundred twenty-two trillion, two hundred eleven billion, eleven million, twenty-one thousand, two hundred ten".