121121321201123 has 8 divisors (see below), whose sum is σ = 123407662036608. Its totient is φ = 118835018620864.

The previous prime is 121121321201107. The next prime is 121121321201131. The reversal of 121121321201123 is 321102123121121.

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 121121321201123 - 2⁴ = 121121321201107 is a prime.

It is a super-2 number, since 2×121121321201123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121321201143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131315 + ... + 15876012.

It is an arithmetic number, because the mean of its divisors is an integer number (15425957754576).

Almost surely, 2^{121121321201123} is an apocalyptic number.

121121321201123 is a deficient number, since it is larger than the sum of its proper divisors (2286340835485).

121121321201123 is a wasteful number, since it uses less digits than its factorization.

121121321201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19127613.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 121121321201123 its reverse (321102123121121), we get a palindrome (442223444322244).

The spelling of 121121321201123 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred one thousand, one hundred twenty-three".