1210212111112 has 8 divisors (see below), whose sum is σ = 2269147708350. Its totient is φ = 605106055552.

The previous prime is 1210212111049. The next prime is 1210212111139. The reversal of 1210212111112 is 2111112120121.

It can be written as a sum of positive squares in only one way, i.e., 860356422916 + 349855688196 = 927554^2 + 591486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1210212111112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75638256937 + ... + 75638256952.

Almost surely, 2^{1210212111112} is an apocalyptic number.

It is an amenable number.

1210212111112 is a deficient number, since it is larger than the sum of its proper divisors (1058935597238).

1210212111112 is a wasteful number, since it uses less digits than its factorization.

1210212111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151276513895 (or 151276513891 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1210212111112 its reverse (2111112120121), we get a palindrome (3321324231233).

Subtracting 1210212111112 from its reverse (2111112120121), we obtain a palindrome (900900009009).

The spelling of 1210212111112 in words is "one trillion, two hundred ten billion, two hundred twelve million, one hundred eleven thousand, one hundred twelve".