121020010321 has 12 divisors (see below), whose sum is σ = 140804610240. Its totient is φ = 103712109480.

The previous prime is 121020010303. The next prime is 121020010357. The reversal of 121020010321 is 123010020121.

It is not a de Polignac number, because 121020010321 - 2⁵ = 121020010289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121020010301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38740 + ... + 493498.

It is an arithmetic number, because the mean of its divisors is an integer number (11733717520).

Almost surely, 2^121020010321 is an apocalyptic number.

It is an amenable number.

121020010321 is a deficient number, since it is larger than the sum of its proper divisors (19784599919).

121020010321 is an equidigital number, since it uses as much as digits as its factorization.

121020010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460204 (or 460197 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121020010321 its reverse (123010020121), we get a palindrome (244030030442).

The spelling of 121020010321 in words is "one hundred twenty-one billion, twenty million, ten thousand, three hundred twenty-one".