1213132122 has 48 divisors (see below), whose sum is σ = 2664553320. Its totient is φ = 398846976.

The previous prime is 1213132111. The next prime is 1213132127. The reversal of 1213132122 is 2212313121.

It can be written as a sum of positive squares in 4 ways, for example, as 1010667681 + 202464441 = 31791^2 + 14229^2 .

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 = 1213132095 and 1213132104.

It is not an unprimeable number, because it can be changed into a prime (1213132127) 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, 949348 + ... + 950624.

Almost surely, 2^1213132122 is an apocalyptic number.

1213132122 is an abundant number, since it is smaller than the sum of its proper divisors (1451421198).

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

1213132122 is a wasteful number, since it uses less digits than its factorization.

1213132122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1964 counting only the distinct ones).

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

The square root of 1213132122 is about 34830.0462531993. The cubic root of 1213132122 is about 1066.5208925572.

Adding to 1213132122 its reverse (2212313121), we get a palindrome (3425445243).

It can be divided in two parts, 12131 and 32122, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1213132122 in words is "one billion, two hundred thirteen million, one hundred thirty-two thousand, one hundred twenty-two".