1201198823 has 12 divisors (see below), whose sum is σ = 1321440120. Its totient is φ = 1091077680.

The previous prime is 1201198811. The next prime is 1201198861. The reversal of 1201198823 is 3288911021.

It is not a de Polignac number, because 1201198823 - 2⁴ = 1201198807 is a prime.

It is a super-2 number, since 2×1201198823² = 2885757224753170658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201198883) 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, 169436 + ... + 176382.

It is an arithmetic number, because the mean of its divisors is an integer number (110120010).

Almost surely, 2^1201198823 is an apocalyptic number.

1201198823 is a deficient number, since it is larger than the sum of its proper divisors (120241297).

1201198823 is a wasteful number, since it uses less digits than its factorization.

1201198823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398 (or 8387 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1201198823 is about 34658.3153514420. The cubic root of 1201198823 is about 1063.0123234990.

It can be divided in two parts, 1201198 and 823, that added together give a palindrome (1202021).

The spelling of 1201198823 in words is "one billion, two hundred one million, one hundred ninety-eight thousand, eight hundred twenty-three".