1311212022 has 16 divisors (see below), whose sum is σ = 2707018752. Its totient is φ = 422971560.

The previous prime is 1311212017. The next prime is 1311212041. The reversal of 1311212022 is 2202121131.

1311212022 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1311211992 and 1311212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524578 + ... + 3524949.

It is an arithmetic number, because the mean of its divisors is an integer number (169188672).

Almost surely, 2^1311212022 is an apocalyptic number.

1311212022 is an abundant number, since it is smaller than the sum of its proper divisors (1395806730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311212022 is a wasteful number, since it uses less digits than its factorization.

1311212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049563.

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

The square root of 1311212022 is about 36210.6617172346. The cubic root of 1311212022 is about 1094.5215265325.

Adding to 1311212022 its reverse (2202121131), we get a palindrome (3513333153).

The spelling of 1311212022 in words is "one billion, three hundred eleven million, two hundred twelve thousand, twenty-two".