221210211211120 has 40 divisors (see below), whose sum is σ = 544567490543664. Its totient is φ = 83279138337792.

The previous prime is 221210211211079. The next prime is 221210211211139. The reversal of 221210211211120 is 21112112012122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81327282174 + ... + 81327284893.

Almost surely, 2^{221210211211120} is an apocalyptic number.

221210211211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221210211211120 is an abundant number, since it is smaller than the sum of its proper divisors (323357279332544).

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

221210211211120 is a wasteful number, since it uses less digits than its factorization.

221210211211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162654567097 (or 162654567091 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221210211211120 its reverse (21112112012122), we get a palindrome (242322323223242).

The spelling of 221210211211120 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred eleven million, two hundred eleven thousand, one hundred twenty".