1312014221 has 8 divisors (see below), whose sum is σ = 1508645184. Its totient is φ = 1117683360.

The previous prime is 1312014217. The next prime is 1312014269. The reversal of 1312014221 is 1224102131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312014221 - 2² = 1312014217 is a prime.

It is a super-2 number, since 2×1312014221² = 3442762632212473682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312014221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312011221) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 573800 + ... + 576081.

It is an arithmetic number, because the mean of its divisors is an integer number (188580648).

Almost surely, 2^1312014221 is an apocalyptic number.

It is an amenable number.

1312014221 is a deficient number, since it is larger than the sum of its proper divisors (196630963).

1312014221 is a wasteful number, since it uses less digits than its factorization.

1312014221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150051.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1312014221 is about 36221.7368578593. The cubic root of 1312014221 is about 1094.7446903082.

Adding to 1312014221 its reverse (1224102131), we get a palindrome (2536116352).

The spelling of 1312014221 in words is "one billion, three hundred twelve million, fourteen thousand, two hundred twenty-one".