1204522261 has 4 divisors (see below), whose sum is σ = 1207700800. Its totient is φ = 1201343724.

The previous prime is 1204522247. The next prime is 1204522289. The reversal of 1204522261 is 1622254021.

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 1204522261 - 2⁹ = 1204521749 is a prime.

It is a super-3 number, since 3×1204522261³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204522211) 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, 1588701 + ... + 1589458.

It is an arithmetic number, because the mean of its divisors is an integer number (301925200).

Almost surely, 2^1204522261 is an apocalyptic number.

It is an amenable number.

1204522261 is a deficient number, since it is larger than the sum of its proper divisors (3178539).

1204522261 is an equidigital number, since it uses as much as digits as its factorization.

1204522261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178538.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1204522261 is about 34706.2279857665. The cubic root of 1204522261 is about 1063.9917900911.

Adding to 1204522261 its reverse (1622254021), we get a palindrome (2826776282).

The spelling of 1204522261 in words is "one billion, two hundred four million, five hundred twenty-two thousand, two hundred sixty-one".