1211552150 has 12 divisors (see below), whose sum is σ = 2253487092. Its totient is φ = 484620840.

The previous prime is 1211552131. The next prime is 1211552183. The reversal of 1211552150 is 512551121.

It is a super-2 number, since 2×1211552150² = 2935717224339245000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12115472 + ... + 12115571.

It is an arithmetic number, because the mean of its divisors is an integer number (187790591).

Almost surely, 2^1211552150 is an apocalyptic number.

1211552150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211552150 is a deficient number, since it is larger than the sum of its proper divisors (1041934942).

1211552150 is a wasteful number, since it uses less digits than its factorization.

1211552150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24231055 (or 24231050 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1211552150 is about 34807.3576991992. The cubic root of 1211552150 is about 1066.0576824397.

The spelling of 1211552150 in words is "one billion, two hundred eleven million, five hundred fifty-two thousand, one hundred fifty".