1211661032 has 16 divisors (see below), whose sum is σ = 2291971140. Its totient is φ = 600468736.

The previous prime is 1211661023. The next prime is 1211661049. The reversal of 1211661032 is 2301661121.

It can be written as a sum of positive squares in 2 ways, for example, as 1187905156 + 23755876 = 34466^2 + 4874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211660989 and 1211661007.

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, 669263 + ... + 671070.

Almost surely, 2^1211661032 is an apocalyptic number.

It is an amenable number.

1211661032 is a deficient number, since it is larger than the sum of its proper divisors (1080310108).

1211661032 is a wasteful number, since it uses less digits than its factorization.

1211661032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340452 (or 1340448 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1211661032 is about 34808.9217299244. The cubic root of 1211661032 is about 1066.0896169614.

The spelling of 1211661032 in words is "one billion, two hundred eleven million, six hundred sixty-one thousand, thirty-two".