221022112012 has 36 divisors (see below), whose sum is σ = 437040409680. Its totient is φ = 97574972352.

The previous prime is 221022111997. The next prime is 221022112049. The reversal of 221022112012 is 210211220122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7092187 + ... + 7123282.

It is an arithmetic number, because the mean of its divisors is an integer number (12140011380).

Almost surely, 2^221022112012 is an apocalyptic number.

It is an amenable number.

221022112012 is a deficient number, since it is larger than the sum of its proper divisors (216018297668).

221022112012 is a wasteful number, since it uses less digits than its factorization.

221022112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215522 (or 14215507 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221022112012 its reverse (210211220122), we get a palindrome (431233332134).

The spelling of 221022112012 in words is "two hundred twenty-one billion, twenty-two million, one hundred twelve thousand, twelve".