1212310121311 has 32 divisors (see below), whose sum is σ = 1252468224000. Its totient is φ = 1173069596160.

The previous prime is 1212310121291. The next prime is 1212310121357. The reversal of 1212310121311 is 1131210132121.

It is a cyclic number.

It is not a de Polignac number, because 1212310121311 - 2¹¹ = 1212310119263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212310122311) 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, 327915415 + ... + 327919111.

It is an arithmetic number, because the mean of its divisors is an integer number (39139632000).

Almost surely, 2^{1212310121311} is an apocalyptic number.

1212310121311 is a deficient number, since it is larger than the sum of its proper divisors (40158102689).

1212310121311 is a wasteful number, since it uses less digits than its factorization.

1212310121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1212310121311 its reverse (1131210132121), we get a palindrome (2343520253432).

The spelling of 1212310121311 in words is "one trillion, two hundred twelve billion, three hundred ten million, one hundred twenty-one thousand, three hundred eleven".