1180126221 has 4 divisors (see below), whose sum is σ = 1573501632. Its totient is φ = 786750812.

The previous prime is 1180126217. The next prime is 1180126223. The reversal of 1180126221 is 1226210811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1180126221 - 2² = 1180126217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1180126191 and 1180126200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180126223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196687701 + ... + 196687706.

It is an arithmetic number, because the mean of its divisors is an integer number (393375408).

Almost surely, 2^1180126221 is an apocalyptic number.

It is an amenable number.

1180126221 is a deficient number, since it is larger than the sum of its proper divisors (393375411).

1180126221 is an equidigital number, since it uses as much as digits as its factorization.

1180126221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393375410.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1180126221 is about 34352.9652431926. The cubic root of 1180126221 is about 1056.7594820179.

The spelling of 1180126221 in words is "one billion, one hundred eighty million, one hundred twenty-six thousand, two hundred twenty-one".