12202051550 has 48 divisors (see below), whose sum is σ = 24453591120. Its totient is φ = 4503171840.

The previous prime is 12202051523. The next prime is 12202051583. The reversal of 12202051550 is 5515020221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2000906 + ... + 2006994.

It is an arithmetic number, because the mean of its divisors is an integer number (509449815).

Almost surely, 2^12202051550 is an apocalyptic number.

12202051550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12202051550 is an abundant number, since it is smaller than the sum of its proper divisors (12251539570).

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

12202051550 is a wasteful number, since it uses less digits than its factorization.

12202051550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9197 (or 9192 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 12202051550 its reverse (5515020221), we get a palindrome (17717071771).

The spelling of 12202051550 in words is "twelve billion, two hundred two million, fifty-one thousand, five hundred fifty".