1211633055 has 12 divisors (see below), whose sum is σ = 2100164040. Its totient is φ = 646204272.

The previous prime is 1211633041. The next prime is 1211633063. The reversal of 1211633055 is 5503361121.

1211633055 is a `hidden beast` number, since 1 + 21 + 1 + 633 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 1211633055 - 2⁴ = 1211633039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13462545 + ... + 13462634.

It is an arithmetic number, because the mean of its divisors is an integer number (175013670).

Almost surely, 2^1211633055 is an apocalyptic number.

1211633055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1211633055 is a deficient number, since it is larger than the sum of its proper divisors (888530985).

1211633055 is a wasteful number, since it uses less digits than its factorization.

1211633055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26925190 (or 26925187 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1211633055 is about 34808.5198622406. The cubic root of 1211633055 is about 1066.0814116361.

Adding to 1211633055 its reverse (5503361121), we get a palindrome (6714994176).

The spelling of 1211633055 in words is "one billion, two hundred eleven million, six hundred thirty-three thousand, fifty-five".