120010111010021 has 2 divisors, whose sum is σ = 120010111010022. Its totient is φ = 120010111010020.

The previous prime is 120010111009993. The next prime is 120010111010057.

120010111010021 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118629368507521 + 1380742502500 = 10891711^2 + 1175050^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 120010111010021 - 2¹⁴ = 120010110993637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120010111009984 and 120010111010011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120010111010521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005055505010 + 60005055505011.

It is an arithmetic number, because the mean of its divisors is an integer number (60005055505011).

Almost surely, 2^{120010111010021} is an apocalyptic number.

It is an amenable number.

120010111010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120010111010021 is an equidigital number, since it uses as much as digits as its factorization.

120010111010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

The spelling of 120010111010021 in words is "one hundred twenty trillion, ten billion, one hundred eleven million, ten thousand, twenty-one".