321221212132 has 12 divisors (see below), whose sum is σ = 562239758080. Its totient is φ = 160581281256.

The previous prime is 321221212087. The next prime is 321221212133. The reversal of 321221212132 is 231212122123.

It is not an unprimeable number, because it can be changed into a prime (321221212133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7306548 + ... + 7350379.

Almost surely, 2^321221212132 is an apocalyptic number.

It is an amenable number.

321221212132 is a deficient number, since it is larger than the sum of its proper divisors (241018545948).

321221212132 is a wasteful number, since it uses less digits than its factorization.

321221212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14662410 (or 14662408 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 321221212132 its reverse (231212122123), we get a palindrome (552433334255).

Subtracting from 321221212132 its reverse (231212122123), we obtain a palindrome (90009090009).

The spelling of 321221212132 in words is "three hundred twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, one hundred thirty-two".