1213225355 has 8 divisors (see below), whose sum is σ = 1465512864. Its totient is φ = 964152000.

The previous prime is 1213225337. The next prime is 1213225379. The reversal of 1213225355 is 5535223121.

1213225355 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213225355 - 2¹⁶ = 1213159819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802706 + ... + 804215.

It is an arithmetic number, because the mean of its divisors is an integer number (183189108).

Almost surely, 2^1213225355 is an apocalyptic number.

1213225355 is a deficient number, since it is larger than the sum of its proper divisors (252287509).

1213225355 is a wasteful number, since it uses less digits than its factorization.

1213225355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607077.

The product of its digits is 9000, while the sum is 29.

The square root of 1213225355 is about 34831.3846265118. The cubic root of 1213225355 is about 1066.5482136801.

Adding to 1213225355 its reverse (5535223121), we get a palindrome (6748448476).

The spelling of 1213225355 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, three hundred fifty-five".