1201223513 has 4 divisors (see below), whose sum is σ = 1372826880. Its totient is φ = 1029620148.

The previous prime is 1201223483. The next prime is 1201223521. The reversal of 1201223513 is 3153221021.

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 1201223513 - 2²⁴ = 1184446297 is a prime.

It is a super-2 number, since 2×1201223513² = 2885875856368122338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201223813) 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, 85801673 + ... + 85801686.

It is an arithmetic number, because the mean of its divisors is an integer number (343206720).

Almost surely, 2^1201223513 is an apocalyptic number.

It is an amenable number.

1201223513 is a deficient number, since it is larger than the sum of its proper divisors (171603367).

1201223513 is an equidigital number, since it uses as much as digits as its factorization.

1201223513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171603366.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1201223513 is about 34658.6715411886. The cubic root of 1201223513 is about 1063.0196066659.

Adding to 1201223513 its reverse (3153221021), we get a palindrome (4354444534).

The spelling of 1201223513 in words is "one billion, two hundred one million, two hundred twenty-three thousand, five hundred thirteen".