1231204001222 has 32 divisors (see below), whose sum is σ = 2026546306848. Its totient is φ = 557484385536.

The previous prime is 1231204001221. The next prime is 1231204001239. The reversal of 1231204001222 is 2221004021321.

It is a junction number, because it is equal to n+sod(n) for n = 1231204001194 and 1231204001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231204001221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25100573 + ... + 25149575.

It is an arithmetic number, because the mean of its divisors is an integer number (63329572089).

Almost surely, 2^{1231204001222} is an apocalyptic number.

1231204001222 is a deficient number, since it is larger than the sum of its proper divisors (795342305626).

1231204001222 is a wasteful number, since it uses less digits than its factorization.

1231204001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67304.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1231204001222 its reverse (2221004021321), we get a palindrome (3452208022543).

The spelling of 1231204001222 in words is "one trillion, two hundred thirty-one billion, two hundred four million, one thousand, two hundred twenty-two".