1210112881 has 4 divisors (see below), whose sum is σ = 1210226164. Its totient is φ = 1209999600.

The previous prime is 1210112857. The next prime is 1210112903. The reversal of 1210112881 is 1882110121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 753008481 + 457104400 = 27441^2 + 21380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210112881 - 2¹³ = 1210104689 is a prime.

It is a super-2 number, since 2×1210112881² = 2928746369524240322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210112821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38730 + ... + 62611.

It is an arithmetic number, because the mean of its divisors is an integer number (302556541).

Almost surely, 2^1210112881 is an apocalyptic number.

It is an amenable number.

1210112881 is a deficient number, since it is larger than the sum of its proper divisors (113283).

1210112881 is a wasteful number, since it uses less digits than its factorization.

1210112881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113282.

The product of its (nonzero) digits is 256, while the sum is 25.

The square root of 1210112881 is about 34786.6767743054. The cubic root of 1210112881 is about 1065.6353724431.

The spelling of 1210112881 in words is "one billion, two hundred ten million, one hundred twelve thousand, eight hundred eighty-one".