1231112020022 has 4 divisors (see below), whose sum is σ = 1846668030036. Its totient is φ = 615556010010.

The previous prime is 1231112020013. The next prime is 1231112020027. The reversal of 1231112020022 is 2200202111321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231112020027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307778005004 + ... + 307778005007.

It is an arithmetic number, because the mean of its divisors is an integer number (461667007509).

Almost surely, 2^{1231112020022} is an apocalyptic number.

1231112020022 is a deficient number, since it is larger than the sum of its proper divisors (615556010014).

1231112020022 is an equidigital number, since it uses as much as digits as its factorization.

1231112020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615556010013.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1231112020022 its reverse (2200202111321), we get a palindrome (3431314131343).

The spelling of 1231112020022 in words is "one trillion, two hundred thirty-one billion, one hundred twelve million, twenty thousand, twenty-two".