1231222404142 has 8 divisors (see below), whose sum is σ = 1846968246432. Its totient is φ = 615566322000.

The previous prime is 1231222404107. The next prime is 1231222404199. The reversal of 1231222404142 is 2414042221321.

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

It is a super-2 number, since 2×1231222404142² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231222404142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22405734 + ... + 22460617.

It is an arithmetic number, because the mean of its divisors is an integer number (230871030804).

Almost surely, 2^{1231222404142} is an apocalyptic number.

1231222404142 is a deficient number, since it is larger than the sum of its proper divisors (615745842290).

1231222404142 is a wasteful number, since it uses less digits than its factorization.

1231222404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44880074.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1231222404142 its reverse (2414042221321), we get a palindrome (3645264625463).

The spelling of 1231222404142 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, four hundred four thousand, one hundred forty-two".