121000122331 has 6 divisors (see below), whose sum is σ = 133000134596. Its totient is φ = 110000111100.

The previous prime is 121000122293. The next prime is 121000122337. The reversal of 121000122331 is 133221000121.

It is not a de Polignac number, because 121000122331 - 2¹⁵ = 121000089563 is a prime.

It is a super-2 number, since 2×121000122331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000122337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500000385 + ... + 500000626.

Almost surely, 2^121000122331 is an apocalyptic number.

121000122331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000122331 is a deficient number, since it is larger than the sum of its proper divisors (12000012265).

121000122331 is a wasteful number, since it uses less digits than its factorization.

121000122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000001033 (or 1000001022 counting only the distinct ones).

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

Adding to 121000122331 its reverse (133221000121), we get a palindrome (254221122452).

The spelling of 121000122331 in words is "one hundred twenty-one billion, one hundred twenty-two thousand, three hundred thirty-one".