1211451232 has 24 divisors (see below), whose sum is σ = 2461983552. Its totient is φ = 586185600.

The previous prime is 1211451217. The next prime is 1211451247. The reversal of 1211451232 is 2321541121.

It is an interprime number because it is at equal distance from previous prime (1211451217) and next prime (1211451247).

It is a super-3 number, since 3×1211451232³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 609619 + ... + 611602.

It is an arithmetic number, because the mean of its divisors is an integer number (102582648).

Almost surely, 2^1211451232 is an apocalyptic number.

It is an amenable number.

1211451232 is an abundant number, since it is smaller than the sum of its proper divisors (1250532320).

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

1211451232 is a wasteful number, since it uses less digits than its factorization.

1211451232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221262 (or 1221254 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 1211451232 is about 34805.9080042455. The cubic root of 1211451232 is about 1066.0280820089.

Adding to 1211451232 its reverse (2321541121), we get a palindrome (3532992353).

The spelling of 1211451232 in words is "one billion, two hundred eleven million, four hundred fifty-one thousand, two hundred thirty-two".