221432223115612 has 48 divisors (see below), whose sum is σ = 396722458353760. Its totient is φ = 108085616739072.

The previous prime is 221432223115559. The next prime is 221432223115633. The reversal of 221432223115612 is 216511322234122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2886313078 + ... + 2886389794.

Almost surely, 2^{221432223115612} is an apocalyptic number.

It is an amenable number.

221432223115612 is a deficient number, since it is larger than the sum of its proper divisors (175290235238148).

221432223115612 is a wasteful number, since it uses less digits than its factorization.

221432223115612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85190 (or 85188 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

Adding to 221432223115612 its reverse (216511322234122), we get a palindrome (437943545349734).

The spelling of 221432223115612 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, two hundred twenty-three million, one hundred fifteen thousand, six hundred twelve".