399022012001 has 2 divisors, whose sum is σ = 399022012002. Its totient is φ = 399022012000.

The previous prime is 399022011961. The next prime is 399022012027. The reversal of 399022012001 is 100210220993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216295685776 + 182726326225 = 465076^2 + 427465^2 .

It is a cyclic number.

It is not a de Polignac number, because 399022012001 - 2¹⁸ = 399021749857 is a prime.

It is a super-2 number, since 2×399022012001² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (399022012201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199511006000 + 199511006001.

It is an arithmetic number, because the mean of its divisors is an integer number (199511006001).

Almost surely, 2^399022012001 is an apocalyptic number.

It is an amenable number.

399022012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

399022012001 is an equidigital number, since it uses as much as digits as its factorization.

399022012001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

Adding to 399022012001 its reverse (100210220993), we get a palindrome (499232232994).

The spelling of 399022012001 in words is "three hundred ninety-nine billion, twenty-two million, twelve thousand, one".