106053947221 has 2 divisors, whose sum is σ = 106053947222. Its totient is φ = 106053947220.

The previous prime is 106053947213. The next prime is 106053947249. The reversal of 106053947221 is 122749350601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84256672900 + 21797274321 = 290270^2 + 147639^2 .

It is a cyclic number.

It is not a de Polignac number, because 106053947221 - 2³ = 106053947213 is a prime.

It is a super-2 number, since 2×106053947221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106053947521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53026973610 + 53026973611.

It is an arithmetic number, because the mean of its divisors is an integer number (53026973611).

Almost surely, 2^106053947221 is an apocalyptic number.

It is an amenable number.

106053947221 is a deficient number, since it is larger than the sum of its proper divisors (1).

106053947221 is an equidigital number, since it uses as much as digits as its factorization.

106053947221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 106053947221 in words is "one hundred six billion, fifty-three million, nine hundred forty-seven thousand, two hundred twenty-one".