1211252996 has 24 divisors (see below), whose sum is σ = 2175182520. Its totient is φ = 589824000.

The previous prime is 1211252953. The next prime is 1211253013. The reversal of 1211252996 is 6992521121.

It can be written as a sum of positive squares in 4 ways, for example, as 241802500 + 969450496 = 15550^2 + 31136^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92420 + ... + 104708.

It is an arithmetic number, because the mean of its divisors is an integer number (90632605).

Almost surely, 2^1211252996 is an apocalyptic number.

It is an amenable number.

1211252996 is a deficient number, since it is larger than the sum of its proper divisors (963929524).

1211252996 is a wasteful number, since it uses less digits than its factorization.

1211252996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12935 (or 12933 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 1211252996 is about 34803.0601528084. The cubic root of 1211252996 is about 1065.9699322832.

The spelling of 1211252996 in words is "one billion, two hundred eleven million, two hundred fifty-two thousand, nine hundred ninety-six".