1211013112 has 32 divisors (see below), whose sum is σ = 2414098080. Its totient is φ = 568247680.

The previous prime is 1211013103. The next prime is 1211013113. The reversal of 1211013112 is 2113101121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211013092 and 1211013101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211013113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52339 + ... + 71842.

It is an arithmetic number, because the mean of its divisors is an integer number (75440565).

Almost surely, 2^1211013112 is an apocalyptic number.

It is an amenable number.

1211013112 is a deficient number, since it is larger than the sum of its proper divisors (1203084968).

1211013112 is a wasteful number, since it uses less digits than its factorization.

1211013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124263 (or 124259 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1211013112 is about 34799.6136760166. The cubic root of 1211013112 is about 1065.8995572213.

Adding to 1211013112 its reverse (2113101121), we get a palindrome (3324114233).

The spelling of 1211013112 in words is "one billion, two hundred eleven million, thirteen thousand, one hundred twelve".