121310200111321 has 16 divisors (see below), whose sum is σ = 130832068308480. Its totient is φ = 111815556984000.

The previous prime is 121310200111319. The next prime is 121310200111327. The reversal of 121310200111321 is 123111002013121.

It is a cyclic number.

It is not a de Polignac number, because 121310200111321 - 2¹ = 121310200111319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121310200111327) 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, 77711931 + ... + 79257583.

It is an arithmetic number, because the mean of its divisors is an integer number (8177004269280).

Almost surely, 2^{121310200111321} is an apocalyptic number.

It is an amenable number.

121310200111321 is a deficient number, since it is larger than the sum of its proper divisors (9521868197159).

121310200111321 is a wasteful number, since it uses less digits than its factorization.

121310200111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554456.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121310200111321 its reverse (123111002013121), we get a palindrome (244421202124442).

The spelling of 121310200111321 in words is "one hundred twenty-one trillion, three hundred ten billion, two hundred million, one hundred eleven thousand, three hundred twenty-one".