1201111097 has 8 divisors (see below), whose sum is σ = 1211955360. Its totient is φ = 1190292480.

The previous prime is 1201111091. The next prime is 1201111117. The reversal of 1201111097 is 7901111021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201111097 - 2¹⁰ = 1201110073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94778 + ... + 106700.

It is an arithmetic number, because the mean of its divisors is an integer number (151494420).

Almost surely, 2^1201111097 is an apocalyptic number.

It is an amenable number.

1201111097 is a deficient number, since it is larger than the sum of its proper divisors (10844263).

1201111097 is a wasteful number, since it uses less digits than its factorization.

1201111097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823.

The product of its (nonzero) digits is 126, while the sum is 23.

The square root of 1201111097 is about 34657.0497446046. The cubic root of 1201111097 is about 1062.9864448830.

The spelling of 1201111097 in words is "one billion, two hundred one million, one hundred eleven thousand, ninety-seven".