1212110103213 has 12 divisors (see below), whose sum is σ = 1752989900220. Its totient is φ = 807074542656.

The previous prime is 1212110103209. The next prime is 1212110103263. The reversal of 1212110103213 is 3123010112121.

1212110103213 is a `hidden beast` number, since 121 + 211 + 0 + 10 + 321 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 469166091849 + 742944011364 = 684957^2 + 861942^2 .

It is not a de Polignac number, because 1212110103213 - 2² = 1212110103209 is a prime.

It is a super-2 number, since 2×1212110103213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212110103263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83230606 + ... + 83245167.

It is an arithmetic number, because the mean of its divisors is an integer number (146082491685).

Almost surely, 2^{1212110103213} is an apocalyptic number.

It is an amenable number.

1212110103213 is a deficient number, since it is larger than the sum of its proper divisors (540879797007).

1212110103213 is a wasteful number, since it uses less digits than its factorization.

1212110103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166476588 (or 166476585 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1212110103213 its reverse (3123010112121), we get a palindrome (4335120215334).

The spelling of 1212110103213 in words is "one trillion, two hundred twelve billion, one hundred ten million, one hundred three thousand, two hundred thirteen".