1312122201 has 32 divisors (see below), whose sum is σ = 1916936448. Its totient is φ = 793497600.

The previous prime is 1312122199. The next prime is 1312122211. The reversal of 1312122201 is 1022212131.

It is not a de Polignac number, because 1312122201 - 2¹ = 1312122199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312122211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 570085 + ... + 572381.

It is an arithmetic number, because the mean of its divisors is an integer number (59904264).

Almost surely, 2^1312122201 is an apocalyptic number.

It is an amenable number.

1312122201 is a deficient number, since it is larger than the sum of its proper divisors (604814247).

1312122201 is a wasteful number, since it uses less digits than its factorization.

1312122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1312122201 is about 36223.2273686374. The cubic root of 1312122201 is about 1094.7747223223.

Adding to 1312122201 its reverse (1022212131), we get a palindrome (2334334332).

The spelling of 1312122201 in words is "one billion, three hundred twelve million, one hundred twenty-two thousand, two hundred one".