121442224321 has 8 divisors (see below), whose sum is σ = 132486149088. Its totient is φ = 110398920000.

The previous prime is 121442224243. The next prime is 121442224333. The reversal of 121442224321 is 123422244121.

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

It is a cyclic number.

It is not a de Polignac number, because 121442224321 - 2²⁹ = 120905353409 is a prime.

It is a super-2 number, since 2×121442224321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121442224321.

It is not an unprimeable number, because it can be changed into a prime (121442224391) 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, 316521 + ... + 585721.

It is an arithmetic number, because the mean of its divisors is an integer number (16560768636).

Almost surely, 2^121442224321 is an apocalyptic number.

121442224321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121442224321 is a deficient number, since it is larger than the sum of its proper divisors (11043924767).

121442224321 is a wasteful number, since it uses less digits than its factorization.

121442224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310223.

The product of its digits is 6144, while the sum is 28.

Adding to 121442224321 its reverse (123422244121), we get a palindrome (244864468442).

The spelling of 121442224321 in words is "one hundred twenty-one billion, four hundred forty-two million, two hundred twenty-four thousand, three hundred twenty-one".