1223249151 has 4 divisors (see below), whose sum is σ = 1630998872. Its totient is φ = 815499432.

The previous prime is 1223249143. The next prime is 1223249173. The reversal of 1223249151 is 1519423221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1223249151 - 2³ = 1223249143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223249191) 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, 203874856 + ... + 203874861.

It is an arithmetic number, because the mean of its divisors is an integer number (407749718).

Almost surely, 2^1223249151 is an apocalyptic number.

1223249151 is a deficient number, since it is larger than the sum of its proper divisors (407749721).

1223249151 is an equidigital number, since it uses as much as digits as its factorization.

1223249151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407749720.

The product of its digits is 4320, while the sum is 30.

The square root of 1223249151 is about 34974.9789277992. The cubic root of 1223249151 is about 1069.4774724722.

The spelling of 1223249151 in words is "one billion, two hundred twenty-three million, two hundred forty-nine thousand, one hundred fifty-one".