1213051172 has 12 divisors (see below), whose sum is σ = 2123093616. Its totient is φ = 606453000.

The previous prime is 1213051163. The next prime is 1213051183. The reversal of 1213051172 is 2711503121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40547 + ... + 63797.

It is an arithmetic number, because the mean of its divisors is an integer number (176924468).

Almost surely, 2^1213051172 is an apocalyptic number.

It is an amenable number.

1213051172 is a deficient number, since it is larger than the sum of its proper divisors (910042444).

1213051172 is a wasteful number, since it uses less digits than its factorization.

1213051172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36298 (or 36296 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1213051172 is about 34828.8841624305. The cubic root of 1213051172 is about 1066.4971697258.

Adding to 1213051172 its reverse (2711503121), we get a palindrome (3924554293).

The spelling of 1213051172 in words is "one billion, two hundred thirteen million, fifty-one thousand, one hundred seventy-two".