1201149221 has 4 divisors (see below), whose sum is σ = 1201296000. Its totient is φ = 1201002444.

The previous prime is 1201149211. The next prime is 1201149269. The reversal of 1201149221 is 1229411021.

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 a de Polignac number, because none of the positive numbers 2^k-1201149221 is a prime.

It is a super-2 number, since 2×1201149221² = 2885518902217813682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201149211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60341 + ... + 77738.

It is an arithmetic number, because the mean of its divisors is an integer number (300324000).

Almost surely, 2^1201149221 is an apocalyptic number.

It is an amenable number.

1201149221 is a deficient number, since it is larger than the sum of its proper divisors (146779).

1201149221 is an equidigital number, since it uses as much as digits as its factorization.

1201149221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146778.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1201149221 is about 34657.5997582060. The cubic root of 1201149221 is about 1062.9976913771.

The spelling of 1201149221 in words is "one billion, two hundred one million, one hundred forty-nine thousand, two hundred twenty-one".