221100021022012 has 24 divisors (see below), whose sum is σ = 427185582792192. Its totient is φ = 99289166065200.

The previous prime is 221100021022007. The next prime is 221100021022039. The reversal of 221100021022012 is 210220120001122.

It is a happy number.

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, 30271083564 + ... + 30271090867.

It is an arithmetic number, because the mean of its divisors is an integer number (17799399283008).

Almost surely, 2^{221100021022012} is an apocalyptic number.

221100021022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221100021022012 is a deficient number, since it is larger than the sum of its proper divisors (206085561770180).

221100021022012 is a wasteful number, since it uses less digits than its factorization.

221100021022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60542174529 (or 60542174527 counting only the distinct ones).

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

Adding to 221100021022012 its reverse (210220120001122), we get a palindrome (431320141023134).

The spelling of 221100021022012 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, twenty-two thousand, twelve".