1215100052212 has 12 divisors (see below), whose sum is σ = 2126437703236. Its totient is φ = 607546422720.

The previous prime is 1215100052167. The next prime is 1215100052227. The reversal of 1215100052212 is 2122500015121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 746921148516 + 468178903696 = 864246^2 + 684236^2 .

It is a congruent number.

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, 53583 + ... + 1559830.

Almost surely, 2^{1215100052212} is an apocalyptic number.

It is an amenable number.

1215100052212 is a deficient number, since it is larger than the sum of its proper divisors (911337651024).

1215100052212 is a wasteful number, since it uses less digits than its factorization.

1215100052212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801698 (or 1801696 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 1215100052212 its reverse (2122500015121), we get a palindrome (3337600067333).

The spelling of 1215100052212 in words is "one trillion, two hundred fifteen billion, one hundred million, fifty-two thousand, two hundred twelve".