1000121122331 has 4 divisors (see below), whose sum is σ = 1013821411752. Its totient is φ = 986420832912.

The previous prime is 1000121122321. The next prime is 1000121122349. The reversal of 1000121122331 is 1332211210001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000121122331 is a prime.

It is a super-2 number, since 2×1000121122331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000121122321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6850144601 + ... + 6850144746.

It is an arithmetic number, because the mean of its divisors is an integer number (253455352938).

Almost surely, 2^{1000121122331} is an apocalyptic number.

1000121122331 is a deficient number, since it is larger than the sum of its proper divisors (13700289421).

1000121122331 is an equidigital number, since it uses as much as digits as its factorization.

1000121122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13700289420.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1000121122331 its reverse (1332211210001), we get a palindrome (2332332332332).

The spelling of 1000121122331 in words is "one trillion, one hundred twenty-one million, one hundred twenty-two thousand, three hundred thirty-one".