121023213331 has 4 divisors (see below), whose sum is σ = 123974999064. Its totient is φ = 118071427600.

The previous prime is 121023213307. The next prime is 121023213419. The reversal of 121023213331 is 133312320121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133312320121 = 47 ⋅2836432343.

It is a cyclic number.

It is not a de Polignac number, because 121023213331 - 2³³ = 112433278739 is a prime.

It is a super-2 number, since 2×121023213331² (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 (121023213131) 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, 1475892805 + ... + 1475892886.

It is an arithmetic number, because the mean of its divisors is an integer number (30993749766).

Almost surely, 2^121023213331 is an apocalyptic number.

121023213331 is a deficient number, since it is larger than the sum of its proper divisors (2951785733).

121023213331 is an equidigital number, since it uses as much as digits as its factorization.

121023213331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951785732.

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

Adding to 121023213331 its reverse (133312320121), we get a palindrome (254335533452).

The spelling of 121023213331 in words is "one hundred twenty-one billion, twenty-three million, two hundred thirteen thousand, three hundred thirty-one".