131212212022 has 4 divisors (see below), whose sum is σ = 196818318036. Its totient is φ = 65606106010.

The previous prime is 131212211983. The next prime is 131212212121. The reversal of 131212212022 is 220212212131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803053004 + ... + 32803053007.

It is an arithmetic number, because the mean of its divisors is an integer number (49204579509).

Almost surely, 2^131212212022 is an apocalyptic number.

131212212022 is a deficient number, since it is larger than the sum of its proper divisors (65606106014).

131212212022 is an equidigital number, since it uses as much as digits as its factorization.

131212212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65606106013.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 131212212022 its reverse (220212212131), we get a palindrome (351424424153).

The spelling of 131212212022 in words is "one hundred thirty-one billion, two hundred twelve million, two hundred twelve thousand, twenty-two".