1222132550 has 48 divisors (see below), whose sum is σ = 2421086112. Its totient is φ = 457382400.

The previous prime is 1222132547. The next prime is 1222132559. The reversal of 1222132550 is 552312221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222132559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142895 + ... + 151205.

It is an arithmetic number, because the mean of its divisors is an integer number (50439294).

Almost surely, 2^1222132550 is an apocalyptic number.

1222132550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222132550 is a deficient number, since it is larger than the sum of its proper divisors (1198953562).

1222132550 is a wasteful number, since it uses less digits than its factorization.

1222132550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8513 (or 8508 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1222132550 is about 34959.0124288430. The cubic root of 1222132550 is about 1069.1519614745.

Adding to 1222132550 its reverse (552312221), we get a palindrome (1774444771).

The spelling of 1222132550 in words is "one billion, two hundred twenty-two million, one hundred thirty-two thousand, five hundred fifty".