1201110997 has 2 divisors, whose sum is σ = 1201110998. Its totient is φ = 1201110996.

The previous prime is 1201110971. The next prime is 1201111007. The reversal of 1201110997 is 7990111021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061847396 + 139263601 = 32586^2 + 11801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201110997 is a prime.

It is a super-2 number, since 2×1201110997² = 2885335254228668018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201110907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555498 + 600555499.

It is an arithmetic number, because the mean of its divisors is an integer number (600555499).

Almost surely, 2^1201110997 is an apocalyptic number.

It is an amenable number.

1201110997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201110997 is an equidigital number, since it uses as much as digits as its factorization.

1201110997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

The square root of 1201110997 is about 34657.0483018967. The cubic root of 1201110997 is about 1062.9864153829.

The spelling of 1201110997 in words is "one billion, two hundred one million, one hundred ten thousand, nine hundred ninety-seven".