106006505021 has 2 divisors, whose sum is σ = 106006505022. Its totient is φ = 106006505020.

The previous prime is 106006505009. The next prime is 106006505023. The reversal of 106006505021 is 120505600601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93872380996 + 12134124025 = 306386^2 + 110155^2 .

It is a cyclic number.

It is not a de Polignac number, because 106006505021 - 2¹⁰ = 106006503997 is a prime.

It is a super-2 number, since 2×106006505021² (a number of 23 digits) contains 22 as substring.

Together with 106006505023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106006505023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53003252510 + 53003252511.

It is an arithmetic number, because the mean of its divisors is an integer number (53003252511).

Almost surely, 2^106006505021 is an apocalyptic number.

It is an amenable number.

106006505021 is a deficient number, since it is larger than the sum of its proper divisors (1).

106006505021 is an equidigital number, since it uses as much as digits as its factorization.

106006505021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 106006505021 in words is "one hundred six billion, six million, five hundred five thousand, twenty-one".