1312000101221 has 8 divisors (see below), whose sum is σ = 1331852461344. Its totient is φ = 1292155690320.

The previous prime is 1312000101187. The next prime is 1312000101253. The reversal of 1312000101221 is 1221010002131.

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 1312000101221 - 2³⁰ = 1310926359397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312000101196 and 1312000101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312000101121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654295 + ... + 2315316.

It is an arithmetic number, because the mean of its divisors is an integer number (166481557668).

Almost surely, 2^{1312000101221} is an apocalyptic number.

It is an amenable number.

1312000101221 is a deficient number, since it is larger than the sum of its proper divisors (19852360123).

1312000101221 is an equidigital number, since it uses as much as digits as its factorization.

1312000101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974611.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1312000101221 its reverse (1221010002131), we get a palindrome (2533010103352).

The spelling of 1312000101221 in words is "one trillion, three hundred twelve billion, one hundred one thousand, two hundred twenty-one".