1210111100012 has 12 divisors (see below), whose sum is σ = 2120841078216. Its totient is φ = 604156506240.

The previous prime is 1210111099999. The next prime is 1210111100057. The reversal of 1210111100012 is 2100011110121.

It is a junction number, because it is equal to n+sod(n) for n = 1210111099966 and 1210111100002.

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, 224757914 + ... + 224763297.

It is an arithmetic number, because the mean of its divisors is an integer number (176736756518).

Almost surely, 2^{1210111100012} is an apocalyptic number.

It is an amenable number.

1210111100012 is a deficient number, since it is larger than the sum of its proper divisors (910729978204).

1210111100012 is a wasteful number, since it uses less digits than its factorization.

1210111100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449521888 (or 449521886 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1210111100012 its reverse (2100011110121), we get a palindrome (3310122210133).

The spelling of 1210111100012 in words is "one trillion, two hundred ten billion, one hundred eleven million, one hundred thousand, twelve".