121121333321 has 16 divisors (see below), whose sum is σ = 134000552448. Its totient is φ = 108894720000.

The previous prime is 121121333303. The next prime is 121121333339. The reversal of 121121333321 is 123333121121.

It is an interprime number because it is at equal distance from previous prime (121121333303) and next prime (121121333339).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121121333321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (121121333351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87401 + ... + 499881.

It is an arithmetic number, because the mean of its divisors is an integer number (8375034528).

Almost surely, 2^121121333321 is an apocalyptic number.

It is an amenable number.

121121333321 is a deficient number, since it is larger than the sum of its proper divisors (12879219127).

121121333321 is a wasteful number, since it uses less digits than its factorization.

121121333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413272.

The product of its digits is 648, while the sum is 23.

Adding to 121121333321 its reverse (123333121121), we get a palindrome (244454454442).

The spelling of 121121333321 in words is "one hundred twenty-one billion, one hundred twenty-one million, three hundred thirty-three thousand, three hundred twenty-one".