121023132331 has 4 divisors (see below), whose sum is σ = 123306587712. Its totient is φ = 118739676952.

The previous prime is 121023132287. The next prime is 121023132367. The reversal of 121023132331 is 133231320121.

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 121023132331 - 2¹⁹ = 121022608043 is a prime.

It is a super-2 number, since 2×121023132331² (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 (121023130331) 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 3 ways as a sum of consecutive naturals, for example, 1141727611 + ... + 1141727716.

It is an arithmetic number, because the mean of its divisors is an integer number (30826646928).

Almost surely, 2^121023132331 is an apocalyptic number.

121023132331 is a deficient number, since it is larger than the sum of its proper divisors (2283455381).

121023132331 is an equidigital number, since it uses as much as digits as its factorization.

121023132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283455380.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121023132331 its reverse (133231320121), we get a palindrome (254254452452).

The spelling of 121023132331 in words is "one hundred twenty-one billion, twenty-three million, one hundred thirty-two thousand, three hundred thirty-one".