1251022211422 has 8 divisors (see below), whose sum is σ = 1879321630176. Its totient is φ = 624581668032.

The previous prime is 1251022211389. The next prime is 1251022211459. The reversal of 1251022211422 is 2241122201521.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464717158 + ... + 464719849.

It is an arithmetic number, because the mean of its divisors is an integer number (234915203772).

Almost surely, 2^{1251022211422} is an apocalyptic number.

1251022211422 is a deficient number, since it is larger than the sum of its proper divisors (628299418754).

1251022211422 is an equidigital number, since it uses as much as digits as its factorization.

1251022211422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929437682.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 1251022211422 its reverse (2241122201521), we get a palindrome (3492144412943).

Subtracting 1251022211422 from its reverse (2241122201521), we obtain a palindrome (990099990099).

The spelling of 1251022211422 in words is "one trillion, two hundred fifty-one billion, twenty-two million, two hundred eleven thousand, four hundred twenty-two".