221120021012 has 24 divisors (see below), whose sum is σ = 422363040960. Its totient is φ = 100455572160.

The previous prime is 221120020999. The next prime is 221120021029. The reversal of 221120021012 is 210120021122.

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, 1254593 + ... + 1419944.

It is an arithmetic number, because the mean of its divisors is an integer number (17598460040).

Almost surely, 2^221120021012 is an apocalyptic number.

221120021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221120021012 is a deficient number, since it is larger than the sum of its proper divisors (201243019948).

221120021012 is a wasteful number, since it uses less digits than its factorization.

221120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676431 (or 2676429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221120021012 its reverse (210120021122), we get a palindrome (431240042134).

The spelling of 221120021012 in words is "two hundred twenty-one billion, one hundred twenty million, twenty-one thousand, twelve".