1231122401420 has 48 divisors (see below), whose sum is σ = 2638150693920. Its totient is φ = 482450006016.

The previous prime is 1231122401357. The next prime is 1231122401423. The reversal of 1231122401420 is 241042211321.

It is not an unprimeable number, because it can be changed into a prime (1231122401423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1434677 + ... + 2126156.

It is an arithmetic number, because the mean of its divisors is an integer number (54961472790).

Almost surely, 2^{1231122401420} is an apocalyptic number.

1231122401420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231122401420 is an abundant number, since it is smaller than the sum of its proper divisors (1407028292500).

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

1231122401420 is a wasteful number, since it uses less digits than its factorization.

1231122401420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561194 (or 3561192 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1231122401420 its reverse (241042211321), we get a palindrome (1472164612741).

The spelling of 1231122401420 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, four hundred one thousand, four hundred twenty".