1240221221422 has 4 divisors (see below), whose sum is σ = 1860331832136. Its totient is φ = 620110610710.

The previous prime is 1240221221341. The next prime is 1240221221431. The reversal of 1240221221422 is 2241221220421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310055305354 + ... + 310055305357.

It is an arithmetic number, because the mean of its divisors is an integer number (465082958034).

Almost surely, 2^{1240221221422} is an apocalyptic number.

1240221221422 is a deficient number, since it is larger than the sum of its proper divisors (620110610714).

1240221221422 is an equidigital number, since it uses as much as digits as its factorization.

1240221221422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620110610713.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 1240221221422 its reverse (2241221220421), we get a palindrome (3481442441843).

The spelling of 1240221221422 in words is "one trillion, two hundred forty billion, two hundred twenty-one million, two hundred twenty-one thousand, four hundred twenty-two".