1201220323 has 4 divisors (see below), whose sum is σ = 1271880360. Its totient is φ = 1130560288.

The previous prime is 1201220303. The next prime is 1201220341. The reversal of 1201220323 is 3230221021.

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 1201220323 - 2²¹ = 1199123171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201220297 and 1201220306.

It is not an unprimeable number, because it can be changed into a prime (1201220303) 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, 35329993 + ... + 35330026.

It is an arithmetic number, because the mean of its divisors is an integer number (317970090).

Almost surely, 2^1201220323 is an apocalyptic number.

1201220323 is a deficient number, since it is larger than the sum of its proper divisors (70660037).

1201220323 is an equidigital number, since it uses as much as digits as its factorization.

1201220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70660036.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1201220323 is about 34658.6255209291. The cubic root of 1201220323 is about 1063.0186656710.

Adding to 1201220323 its reverse (3230221021), we get a palindrome (4431441344).

The spelling of 1201220323 in words is "one billion, two hundred one million, two hundred twenty thousand, three hundred twenty-three".