131212022 has 4 divisors (see below), whose sum is σ = 196818036. Its totient is φ = 65606010.

The previous prime is 131212021. The next prime is 131212031. The reversal of 131212022 is 220212131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220212131 = 59 ⋅3732409.

It is a junction number, because it is equal to n+sod(n) for n = 131211988 and 131212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803004 + ... + 32803007.

It is an arithmetic number, because the mean of its divisors is an integer number (49204509).

Almost surely, 2^131212022 is an apocalyptic number.

131212022 is a deficient number, since it is larger than the sum of its proper divisors (65606014).

131212022 is an equidigital number, since it uses as much as digits as its factorization.

131212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65606013.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 131212022 is about 11454.7816216635. The cubic root of 131212022 is about 508.1491569159.

Adding to 131212022 its reverse (220212131), we get a palindrome (351424153).

The spelling of 131212022 in words is "one hundred thirty-one million, two hundred twelve thousand, twenty-two".