1131221014 has 24 divisors (see below), whose sum is σ = 2131560144. Its totient is φ = 440734800.

The previous prime is 1131221011. The next prime is 1131221023. The reversal of 1131221014 is 4101221311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131221011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332197 + ... + 335584.

It is an arithmetic number, because the mean of its divisors is an integer number (88815006).

Almost surely, 2^1131221014 is an apocalyptic number.

1131221014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1131221014 is a deficient number, since it is larger than the sum of its proper divisors (1000339130).

1131221014 is a wasteful number, since it uses less digits than its factorization.

1131221014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667812 (or 667801 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1131221014 is about 33633.6292124415. The cubic root of 1131221014 is about 1041.9554598724.

Adding to 1131221014 its reverse (4101221311), we get a palindrome (5232442325).

The spelling of 1131221014 in words is "one billion, one hundred thirty-one million, two hundred twenty-one thousand, fourteen".