121231323333011 has 4 divisors (see below), whose sum is σ = 125411713792800. Its totient is φ = 117050932873224.

The previous prime is 121231323332983. The next prime is 121231323333031. The reversal of 121231323333011 is 110333323132121.

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

It is a cyclic number.

It is not a de Polignac number, because 121231323333011 - 2³⁸ = 120956445426067 is a prime.

It is a super-2 number, since 2×121231323333011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 4180390459759 = 121231323333011 / (1 + 2 + 1 + 2 + 3 + 1 + 3 + 2 + 3 + 3 + 3 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121231323333031) 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, 2090195229851 + ... + 2090195229908.

It is an arithmetic number, because the mean of its divisors is an integer number (31352928448200).

Almost surely, 2^{121231323333011} is an apocalyptic number.

121231323333011 is a deficient number, since it is larger than the sum of its proper divisors (4180390459789).

121231323333011 is an equidigital number, since it uses as much as digits as its factorization.

121231323333011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180390459788.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 121231323333011 its reverse (110333323132121), we get a palindrome (231564646465132).

The spelling of 121231323333011 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred twenty-three million, three hundred thirty-three thousand, eleven".