1321211322 has 48 divisors (see below), whose sum is σ = 3062735520. Its totient is φ = 410378400.

The previous prime is 1321211317. The next prime is 1321211329. The reversal of 1321211322 is 2231121231.

1321211322 is a `hidden beast` number, since 1 + 321 + 21 + 1 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1321211295 and 1321211304.

It is not an unprimeable number, because it can be changed into a prime (1321211329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10804 + ... + 52527.

It is an arithmetic number, because the mean of its divisors is an integer number (63806990).

Almost surely, 2^1321211322 is an apocalyptic number.

1321211322 is an abundant number, since it is smaller than the sum of its proper divisors (1741524198).

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

1321211322 is a wasteful number, since it uses less digits than its factorization.

1321211322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63419 (or 63416 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1321211322 is about 36348.4706968533. The cubic root of 1321211322 is about 1097.2967567284.

Adding to 1321211322 its reverse (2231121231), we get a palindrome (3552332553).

Subtracting 1321211322 from its reverse (2231121231), we obtain a palindrome (909909909).

The spelling of 1321211322 in words is "one billion, three hundred twenty-one million, two hundred eleven thousand, three hundred twenty-two".