12221023132 has 12 divisors (see below), whose sum is σ = 21476276640. Its totient is φ = 6084944096.

The previous prime is 12221023127. The next prime is 12221023141. The reversal of 12221023132 is 23132012221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6390793 + ... + 6392704.

It is an arithmetic number, because the mean of its divisors is an integer number (1789689720).

Almost surely, 2^12221023132 is an apocalyptic number.

It is an amenable number.

12221023132 is a deficient number, since it is larger than the sum of its proper divisors (9255253508).

12221023132 is a wasteful number, since it uses less digits than its factorization.

12221023132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12783740 (or 12783738 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12221023132 its reverse (23132012221), we get a palindrome (35353035353).

The spelling of 12221023132 in words is "twelve billion, two hundred twenty-one million, twenty-three thousand, one hundred thirty-two".