1213225719 has 8 divisors (see below), whose sum is σ = 1618710912. Its totient is φ = 808278840.

The previous prime is 1213225687. The next prime is 1213225721. The reversal of 1213225719 is 9175223121.

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

It is not a de Polignac number, because 1213225719 - 2⁵ = 1213225687 is a prime.

It is a super-2 number, since 2×1213225719² = 2943833290486133922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213225719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213225019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129289 + ... + 138354.

It is an arithmetic number, because the mean of its divisors is an integer number (202338864).

Almost surely, 2^1213225719 is an apocalyptic number.

1213225719 is a deficient number, since it is larger than the sum of its proper divisors (405485193).

1213225719 is a wasteful number, since it uses less digits than its factorization.

1213225719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269157.

The product of its digits is 7560, while the sum is 33.

The square root of 1213225719 is about 34831.3898516841. The cubic root of 1213225719 is about 1066.5483203444.

The spelling of 1213225719 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, seven hundred nineteen".