1252621222 has 8 divisors (see below), whose sum is σ = 1879184016. Its totient is φ = 626226552.

The previous prime is 1252621211. The next prime is 1252621229. The reversal of 1252621222 is 2221262521.

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

It is a super-3 number, since 3×1252621222³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252621229) 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, 21373 + ... + 54424.

It is an arithmetic number, because the mean of its divisors is an integer number (234898002).

Almost surely, 2^1252621222 is an apocalyptic number.

1252621222 is a deficient number, since it is larger than the sum of its proper divisors (626562794).

1252621222 is an equidigital number, since it uses as much as digits as its factorization.

1252621222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84062.

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

The square root of 1252621222 is about 35392.3893231299. The cubic root of 1252621222 is about 1077.9697861910.

Adding to 1252621222 its reverse (2221262521), we get a palindrome (3473883743).

The spelling of 1252621222 in words is "one billion, two hundred fifty-two million, six hundred twenty-one thousand, two hundred twenty-two".