121023221331 has 8 divisors (see below), whose sum is σ = 163574765200. Its totient is φ = 79576912512.

The previous prime is 121023221281. The next prime is 121023221353. The reversal of 121023221331 is 133122320121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121023221331 - 2²¹ = 121021124179 is a prime.

It is a super-2 number, since 2×121023221331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121023221298 and 121023221307.

It is not an unprimeable number, because it can be changed into a prime (121028221331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276308506 + ... + 276308943.

It is an arithmetic number, because the mean of its divisors is an integer number (20446845650).

Almost surely, 2^121023221331 is an apocalyptic number.

121023221331 is a deficient number, since it is larger than the sum of its proper divisors (42551543869).

121023221331 is an equidigital number, since it uses as much as digits as its factorization.

121023221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552617525.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121023221331 its reverse (133122320121), we get a palindrome (254145541452).

The spelling of 121023221331 in words is "one hundred twenty-one billion, twenty-three million, two hundred twenty-one thousand, three hundred thirty-one".