1222120072 has 32 divisors (see below), whose sum is σ = 2451307320. Its totient is φ = 569180160.

The previous prime is 1222120063. The next prime is 1222120073. The reversal of 1222120072 is 2700212221.

It can be written as a sum of positive squares in 4 ways, for example, as 1215637956 + 6482116 = 34866^2 + 2546^2 .

It is not an unprimeable number, because it can be changed into a prime (1222120073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33129 + ... + 59512.

Almost surely, 2^1222120072 is an apocalyptic number.

It is an amenable number.

1222120072 is an abundant number, since it is smaller than the sum of its proper divisors (1229187248).

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

1222120072 is a wasteful number, since it uses less digits than its factorization.

1222120072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92761 (or 92757 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1222120072 is about 34958.8339622477. The cubic root of 1222120072 is about 1069.1483227738.

Adding to 1222120072 its reverse (2700212221), we get a palindrome (3922332293).

The spelling of 1222120072 in words is "one billion, two hundred twenty-two million, one hundred twenty thousand, seventy-two".