1211115952 has 20 divisors (see below), whose sum is σ = 2349240016. Its totient is φ = 604860480.

The previous prime is 1211115949. The next prime is 1211115979. The reversal of 1211115952 is 2595111121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211115952.

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, 29124 + ... + 57187.

Almost surely, 2^1211115952 is an apocalyptic number.

It is an amenable number.

1211115952 is a deficient number, since it is larger than the sum of its proper divisors (1138124064).

1211115952 is an equidigital number, since it uses as much as digits as its factorization.

1211115952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87196 (or 87190 counting only the distinct ones).

The product of its digits is 900, while the sum is 28.

The square root of 1211115952 is about 34801.0912472583. The cubic root of 1211115952 is about 1065.9297286556.

The spelling of 1211115952 in words is "one billion, two hundred eleven million, one hundred fifteen thousand, nine hundred fifty-two".