1215512230422 has 32 divisors (see below), whose sum is σ = 2784314391552. Its totient is φ = 346539118464.

The previous prime is 1215512230397. The next prime is 1215512230433. The reversal of 1215512230422 is 2240322155121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215512230422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31234083 + ... + 31272974.

It is an arithmetic number, because the mean of its divisors is an integer number (87009824736).

Almost surely, 2^{1215512230422} is an apocalyptic number.

1215512230422 is an abundant number, since it is smaller than the sum of its proper divisors (1568802161130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215512230422 is a wasteful number, since it uses less digits than its factorization.

1215512230422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62507532.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1215512230422 its reverse (2240322155121), we get a palindrome (3455834385543).

The spelling of 1215512230422 in words is "one trillion, two hundred fifteen billion, five hundred twelve million, two hundred thirty thousand, four hundred twenty-two".