1131030231222 has 32 divisors (see below), whose sum is σ = 2269519384320. Its totient is φ = 375767552160.

The previous prime is 1131030231187. The next prime is 1131030231277. The reversal of 1131030231222 is 2221320301311.

It is a super-2 number, since 2×1131030231222² (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 15 ways as a sum of consecutive naturals, for example, 7309368 + ... + 7462500.

It is an arithmetic number, because the mean of its divisors is an integer number (70922480760).

Almost surely, 2^{1131030231222} is an apocalyptic number.

1131030231222 is an abundant number, since it is smaller than the sum of its proper divisors (1138489153098).

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

1131030231222 is a wasteful number, since it uses less digits than its factorization.

1131030231222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157188.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1131030231222 its reverse (2221320301311), we get a palindrome (3352350532533).

The spelling of 1131030231222 in words is "one trillion, one hundred thirty-one billion, thirty million, two hundred thirty-one thousand, two hundred twenty-two".