1231200300121 has 8 divisors (see below), whose sum is σ = 1343140178688. Its totient is φ = 1119262518000.

The previous prime is 1231200300107. The next prime is 1231200300151. The reversal of 1231200300121 is 1210030021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231200300121 - 2⁵ = 1231200300089 is a prime.

It is a super-2 number, since 2×1231200300121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231200300095 and 1231200300104.

It is not an unprimeable number, because it can be changed into a prime (1231200300151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863611 + ... + 1791151.

It is an arithmetic number, because the mean of its divisors is an integer number (167892522336).

Almost surely, 2^{1231200300121} is an apocalyptic number.

1231200300121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1231200300121 is a deficient number, since it is larger than the sum of its proper divisors (111939878567).

1231200300121 is a wasteful number, since it uses less digits than its factorization.

1231200300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048223.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1231200300121 its reverse (1210030021321), we get a palindrome (2441230321442).

The spelling of 1231200300121 in words is "one trillion, two hundred thirty-one billion, two hundred million, three hundred thousand, one hundred twenty-one".