1231310201222 has 4 divisors (see below), whose sum is σ = 1846965301836. Its totient is φ = 615655100610.

The previous prime is 1231310201221. The next prime is 1231310201227. The reversal of 1231310201222 is 2221020131321.

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

It is a super-2 number, since 2×1231310201222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231310201194 and 1231310201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231310201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307827550304 + ... + 307827550307.

It is an arithmetic number, because the mean of its divisors is an integer number (461741325459).

Almost surely, 2^{1231310201222} is an apocalyptic number.

1231310201222 is a deficient number, since it is larger than the sum of its proper divisors (615655100614).

1231310201222 is an equidigital number, since it uses as much as digits as its factorization.

1231310201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615655100613.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1231310201222 its reverse (2221020131321), we get a palindrome (3452330332543).

The spelling of 1231310201222 in words is "one trillion, two hundred thirty-one billion, three hundred ten million, two hundred one thousand, two hundred twenty-two".