1550232015222 has 128 divisors (see below), whose sum is σ = 3503471984640. Its totient is φ = 453049200000.

The previous prime is 1550232015221. The next prime is 1550232015247. The reversal of 1550232015222 is 2225102320551.

It is a self number, because there is not a number n which added to its sum of digits gives 1550232015222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550232015221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1089410403 + ... + 1089411825.

It is an arithmetic number, because the mean of its divisors is an integer number (27370874880).

Almost surely, 2^{1550232015222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550232015222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751735992320).

1550232015222 is an abundant number, since it is smaller than the sum of its proper divisors (1953239969418).

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

1550232015222 is a wasteful number, since it uses less digits than its factorization.

1550232015222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1550232015222 its reverse (2225102320551), we get a palindrome (3775334335773).

The spelling of 1550232015222 in words is "one trillion, five hundred fifty billion, two hundred thirty-two million, fifteen thousand, two hundred twenty-two".