201312022 has 4 divisors (see below), whose sum is σ = 301968036. Its totient is φ = 100656010.

The previous prime is 201311993. The next prime is 201312061. The reversal of 201312022 is 220213102.

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

It is a junction number, because it is equal to n+sod(n) for n = 201311993 and 201312011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50328004 + ... + 50328007.

It is an arithmetic number, because the mean of its divisors is an integer number (75492009).

Almost surely, 2^201312022 is an apocalyptic number.

201312022 is a deficient number, since it is larger than the sum of its proper divisors (100656014).

201312022 is a wasteful number, since it uses less digits than its factorization.

201312022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100656013.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 201312022 is about 14188.4467789818. The cubic root of 201312022 is about 586.0795533180.

Adding to 201312022 its reverse (220213102), we get a palindrome (421525124).

The spelling of 201312022 in words is "two hundred one million, three hundred twelve thousand, twenty-two".