1111331201 has 2 divisors, whose sum is σ = 1111331202. Its totient is φ = 1111331200.

The previous prime is 1111331197. The next prime is 1111331213. The reversal of 1111331201 is 1021331111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101244225 + 10086976 = 33185^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111331201 - 2² = 1111331197 is a prime.

It is a super-2 number, since 2×1111331201² = 2470114076632204802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111331101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555665600 + 555665601.

It is an arithmetic number, because the mean of its divisors is an integer number (555665601).

Almost surely, 2^1111331201 is an apocalyptic number.

It is an amenable number.

1111331201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111331201 is an equidigital number, since it uses as much as digits as its factorization.

1111331201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1111331201 is about 33336.6345181993. The cubic root of 1111331201 is about 1035.8125511821.

Adding to 1111331201 its reverse (1021331111), we get a palindrome (2132662312).

The spelling of 1111331201 in words is "one billion, one hundred eleven million, three hundred thirty-one thousand, two hundred one".