12132212402 has 4 divisors (see below), whose sum is σ = 18198318606. Its totient is φ = 6066106200.

The previous prime is 12132212387. The next prime is 12132212419. The reversal of 12132212402 is 20421223121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20421223121 = 13 ⋅1570863317.

It can be written as a sum of positive squares in only one way, i.e., 6206445961 + 5925766441 = 78781^2 + 76979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3033053099 + ... + 3033053102.

Almost surely, 2^12132212402 is an apocalyptic number.

12132212402 is a deficient number, since it is larger than the sum of its proper divisors (6066106204).

12132212402 is an equidigital number, since it uses as much as digits as its factorization.

12132212402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066106203.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12132212402 its reverse (20421223121), we get a palindrome (32553435523).

The spelling of 12132212402 in words is "twelve billion, one hundred thirty-two million, two hundred twelve thousand, four hundred two".