1220229753 has 4 divisors (see below), whose sum is σ = 1626973008. Its totient is φ = 813486500.

The previous prime is 1220229749. The next prime is 1220229797. The reversal of 1220229753 is 3579220221.

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 1220229753 - 2² = 1220229749 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220229733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203371623 + ... + 203371628.

It is an arithmetic number, because the mean of its divisors is an integer number (406743252).

Almost surely, 2^1220229753 is an apocalyptic number.

It is an amenable number.

1220229753 is a deficient number, since it is larger than the sum of its proper divisors (406743255).

1220229753 is an equidigital number, since it uses as much as digits as its factorization.

1220229753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406743254.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1220229753 is about 34931.7871429447. The cubic root of 1220229753 is about 1068.5968018707.

Adding to 1220229753 its reverse (3579220221), we get a palindrome (4799449974).

The spelling of 1220229753 in words is "one billion, two hundred twenty million, two hundred twenty-nine thousand, seven hundred fifty-three".