1231222104402 has 8 divisors (see below), whose sum is σ = 2462444208816. Its totient is φ = 410407368132.

The previous prime is 1231222104377. The next prime is 1231222104443. The reversal of 1231222104402 is 2044012221321.

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

1231222104402 is an admirable 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, 102601842028 + ... + 102601842039.

It is an arithmetic number, because the mean of its divisors is an integer number (307805526102).

Almost surely, 2^{1231222104402} is an apocalyptic number.

1231222104402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231222104402 is a wasteful number, since it uses less digits than its factorization.

1231222104402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205203684072.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1231222104402 its reverse (2044012221321), we get a palindrome (3275234325723).

The spelling of 1231222104402 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred four thousand, four hundred two".