21442023394201 has 2 divisors, whose sum is σ = 21442023394202. Its totient is φ = 21442023394200.

The previous prime is 21442023394147. The next prime is 21442023394223. The reversal of 21442023394201 is 10249332024412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17542267345801 + 3899756048400 = 4188349^2 + 1974780^2 .

It is a cyclic number.

It is not a de Polignac number, because 21442023394201 - 2³⁷ = 21304584440729 is a prime.

It is a super-3 number, since 3×21442023394201³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21442023394241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721011697100 + 10721011697101.

It is an arithmetic number, because the mean of its divisors is an integer number (10721011697101).

Almost surely, 2^{21442023394201} is an apocalyptic number.

It is an amenable number.

21442023394201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442023394201 is an equidigital number, since it uses as much as digits as its factorization.

21442023394201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 21442023394201 in words is "twenty-one trillion, four hundred forty-two billion, twenty-three million, three hundred ninety-four thousand, two hundred one".