1231303213122 has 16 divisors (see below), whose sum is σ = 2486988669312. Its totient is φ = 406370697200.

The previous prime is 1231303213079. The next prime is 1231303213171. The reversal of 1231303213122 is 2213123031321.

It is a super-2 number, since 2×1231303213122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231303213092 and 1231303213101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015926138 + ... + 1015927349.

It is an arithmetic number, because the mean of its divisors is an integer number (155436791832).

Almost surely, 2^{1231303213122} is an apocalyptic number.

1231303213122 is an abundant number, since it is smaller than the sum of its proper divisors (1255685456190).

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

1231303213122 is a wasteful number, since it uses less digits than its factorization.

1231303213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031853593.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231303213122 its reverse (2213123031321), we get a palindrome (3444426244443).

The spelling of 1231303213122 in words is "one trillion, two hundred thirty-one billion, three hundred three million, two hundred thirteen thousand, one hundred twenty-two".