221202021112 has 32 divisors (see below), whose sum is σ = 415650060000. Its totient is φ = 110362267008.

The previous prime is 221202021041. The next prime is 221202021113. The reversal of 221202021112 is 211120202122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202021113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7159714 + ... + 7190542.

It is an arithmetic number, because the mean of its divisors is an integer number (12989064375).

Almost surely, 2^221202021112 is an apocalyptic number.

It is an amenable number.

221202021112 is a deficient number, since it is larger than the sum of its proper divisors (194448038888).

221202021112 is a wasteful number, since it uses less digits than its factorization.

221202021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32743 (or 32739 counting only the distinct ones).

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

Adding to 221202021112 its reverse (211120202122), we get a palindrome (432322223234).

The spelling of 221202021112 in words is "two hundred twenty-one billion, two hundred two million, twenty-one thousand, one hundred twelve".