1231021123204 has 24 divisors (see below), whose sum is σ = 2206881750528. Its totient is φ = 600484176960.

The previous prime is 1231021123201. The next prime is 1231021123207. The reversal of 1231021123204 is 4023211201321.

It is an interprime number because it is at equal distance from previous prime (1231021123201) and next prime (1231021123207).

It is not an unprimeable number, because it can be changed into a prime (1231021123201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12804297 + ... + 12900079.

It is an arithmetic number, because the mean of its divisors is an integer number (91953406272).

Almost surely, 2^{1231021123204} is an apocalyptic number.

It is an amenable number.

1231021123204 is a deficient number, since it is larger than the sum of its proper divisors (975860627324).

1231021123204 is a wasteful number, since it uses less digits than its factorization.

1231021123204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174195 (or 174193 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1231021123204 its reverse (4023211201321), we get a palindrome (5254232324525).

The spelling of 1231021123204 in words is "one trillion, two hundred thirty-one billion, twenty-one million, one hundred twenty-three thousand, two hundred four".