221210112001004 has 24 divisors (see below), whose sum is σ = 442464198347808. Its totient is φ = 94794910640640.

The previous prime is 221210112000989. The next prime is 221210112001051. The reversal of 221210112001004 is 400100211012122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392341349 + ... + 392904764.

It is an arithmetic number, because the mean of its divisors is an integer number (18436008264492).

Almost surely, 2^{221210112001004} is an apocalyptic number.

It is an amenable number.

221210112001004 is an abundant number, since it is smaller than the sum of its proper divisors (221254086346804).

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

221210112001004 is a wasteful number, since it uses less digits than its factorization.

221210112001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785256185 (or 785256183 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221210112001004 its reverse (400100211012122), we get a palindrome (621310323013126).

The spelling of 221210112001004 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred twelve million, one thousand, four".