1321122122 has 16 divisors (see below), whose sum is σ = 2123537472. Its totient is φ = 614212800.

The previous prime is 1321122109. The next prime is 1321122151. The reversal of 1321122122 is 2212211231.

It is a super-2 number, since 2×1321122122² = 3490727322475565768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1321122122.

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, 231254 + ... + 236897.

It is an arithmetic number, because the mean of its divisors is an integer number (132721092).

Almost surely, 2^1321122122 is an apocalyptic number.

1321122122 is a deficient number, since it is larger than the sum of its proper divisors (802415350).

1321122122 is a wasteful number, since it uses less digits than its factorization.

1321122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468253.

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

The square root of 1321122122 is about 36347.2436644101. The cubic root of 1321122122 is about 1097.2720619472.

Adding to 1321122122 its reverse (2212211231), we get a palindrome (3533333353).

The spelling of 1321122122 in words is "one billion, three hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".