1211012100112 has 20 divisors (see below), whose sum is σ = 2396257986816. Its totient is φ = 592622942240.

The previous prime is 1211012100101. The next prime is 1211012100211. The reversal of 1211012100112 is 2110012101121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211012100092 and 1211012100101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805193464 + ... + 805194967.

Almost surely, 2^{1211012100112} is an apocalyptic number.

It is an amenable number.

1211012100112 is a deficient number, since it is larger than the sum of its proper divisors (1185245886704).

1211012100112 is a wasteful number, since it uses less digits than its factorization.

1211012100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610388486 (or 1610388480 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211012100112 its reverse (2110012101121), we get a palindrome (3321024201233).

The spelling of 1211012100112 in words is "one trillion, two hundred eleven billion, twelve million, one hundred thousand, one hundred twelve".