121231122002321 has 16 divisors (see below), whose sum is σ = 128584237427328. Its totient is φ = 114051771187200.

The previous prime is 121231122002293. The next prime is 121231122002351. The reversal of 121231122002321 is 123200221132121.

It is a cyclic number.

It is not a de Polignac number, because 121231122002321 - 2¹⁸ = 121231121740177 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121231122002351) 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 15 ways as a sum of consecutive naturals, for example, 18738890 + ... + 24364076.

It is an arithmetic number, because the mean of its divisors is an integer number (8036514839208).

Almost surely, 2^{121231122002321} is an apocalyptic number.

It is an amenable number.

121231122002321 is a deficient number, since it is larger than the sum of its proper divisors (7353115425007).

121231122002321 is a wasteful number, since it uses less digits than its factorization.

121231122002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640632.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121231122002321 its reverse (123200221132121), we get a palindrome (244431343134442).

The spelling of 121231122002321 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, one hundred twenty-two million, two thousand, three hundred twenty-one".