1213302122 has 4 divisors (see below), whose sum is σ = 1819953186. Its totient is φ = 606651060.

The previous prime is 1213302119. The next prime is 1213302143. The reversal of 1213302122 is 2212033121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2212033121 = 379 ⋅5836499.

It can be written as a sum of positive squares in only one way, i.e., 612513001 + 600789121 = 24749^2 + 24511^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1213302122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303325529 + ... + 303325532.

Almost surely, 2^1213302122 is an apocalyptic number.

1213302122 is a deficient number, since it is larger than the sum of its proper divisors (606651064).

1213302122 is an equidigital number, since it uses as much as digits as its factorization.

1213302122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606651063.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213302122 is about 34832.4865893895. The cubic root of 1213302122 is about 1066.5707085336.

Adding to 1213302122 its reverse (2212033121), we get a palindrome (3425335243).

The spelling of 1213302122 in words is "one billion, two hundred thirteen million, three hundred two thousand, one hundred twenty-two".