1215344032422 has 64 divisors (see below), whose sum is σ = 2652896606976. Its totient is φ = 368951806080.

The previous prime is 1215344032367. The next prime is 1215344032451. The reversal of 1215344032422 is 2242304435121.

It is a happy number.

It is a super-2 number, since 2×1215344032422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1423953 + ... + 2111475.

It is an arithmetic number, because the mean of its divisors is an integer number (41451509484).

Almost surely, 2^{1215344032422} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215344032422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326448303488).

1215344032422 is an abundant number, since it is smaller than the sum of its proper divisors (1437552574554).

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

1215344032422 is a wasteful number, since it uses less digits than its factorization.

1215344032422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687845.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 1215344032422 its reverse (2242304435121), we get a palindrome (3457648467543).

The spelling of 1215344032422 in words is "one trillion, two hundred fifteen billion, three hundred forty-four million, thirty-two thousand, four hundred twenty-two".