221021022120112 has 40 divisors (see below), whose sum is σ = 437764252120560. Its totient is φ = 108070546126080.

The previous prime is 221021022120011. The next prime is 221021022120133. The reversal of 221021022120112 is 211021220120122.

It is a self number, because there is not a number n which added to its sum of digits gives 221021022120112.

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, 654328162 + ... + 654665857.

It is an arithmetic number, because the mean of its divisors is an integer number (10944106303014).

Almost surely, 2^{221021022120112} is an apocalyptic number.

It is an amenable number.

221021022120112 is a deficient number, since it is larger than the sum of its proper divisors (216743230000448).

221021022120112 is a wasteful number, since it uses less digits than its factorization.

221021022120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308994261 (or 1308994255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221021022120112 its reverse (211021220120122), we get a palindrome (432042242240234).

The spelling of 221021022120112 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-two million, one hundred twenty thousand, one hundred twelve".