1213210203112 has 16 divisors (see below), whose sum is σ = 2280499033860. Its totient is φ = 605077127424.

The previous prime is 1213210203061. The next prime is 1213210203131. The reversal of 1213210203112 is 2113020123121.

It can be written as a sum of positive squares in 2 ways, for example, as 1030277780676 + 182932422436 = 1015026^2 + 427706^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1213210203112.

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, 190993393 + ... + 190999744.

Almost surely, 2^{1213210203112} is an apocalyptic number.

It is an amenable number.

1213210203112 is a deficient number, since it is larger than the sum of its proper divisors (1067288830748).

1213210203112 is a wasteful number, since it uses less digits than its factorization.

1213210203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381993540 (or 381993536 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1213210203112 its reverse (2113020123121), we get a palindrome (3326230326233).

The spelling of 1213210203112 in words is "one trillion, two hundred thirteen billion, two hundred ten million, two hundred three thousand, one hundred twelve".