120121120001021 has 2 divisors, whose sum is σ = 120121120001022. Its totient is φ = 120121120001020.

The previous prime is 120121120001011. The next prime is 120121120001059. The reversal of 120121120001021 is 120100021121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80331694212025 + 39789425788996 = 8962795^2 + 6307886^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121120001021 - 2³⁰ = 120120046259197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120121120000987 and 120121120001005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121120001011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060560000510 + 60060560000511.

It is an arithmetic number, because the mean of its divisors is an integer number (60060560000511).

Almost surely, 2^{120121120001021} is an apocalyptic number.

It is an amenable number.

120121120001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121120001021 is an equidigital number, since it uses as much as digits as its factorization.

120121120001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120121120001021 its reverse (120100021121021), we get a palindrome (240221141122042).

The spelling of 120121120001021 in words is "one hundred twenty trillion, one hundred twenty-one billion, one hundred twenty million, one thousand, twenty-one".