1223150451 has 4 divisors (see below), whose sum is σ = 1630867272. Its totient is φ = 815433632.

The previous prime is 1223150449. The next prime is 1223150471. The reversal of 1223150451 is 1540513221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1223150451 - 2¹ = 1223150449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223150471) 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, 203858406 + ... + 203858411.

It is an arithmetic number, because the mean of its divisors is an integer number (407716818).

Almost surely, 2^1223150451 is an apocalyptic number.

1223150451 is a deficient number, since it is larger than the sum of its proper divisors (407716821).

1223150451 is an equidigital number, since it uses as much as digits as its factorization.

1223150451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407716820.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1223150451 is about 34973.5678906228. The cubic root of 1223150451 is about 1069.4487074776.

Adding to 1223150451 its reverse (1540513221), we get a palindrome (2763663672).

The spelling of 1223150451 in words is "one billion, two hundred twenty-three million, one hundred fifty thousand, four hundred fifty-one".