201001312322381 has 2 divisors, whose sum is σ = 201001312322382. Its totient is φ = 201001312322380.

The previous prime is 201001312322329. The next prime is 201001312322387. The reversal of 201001312322381 is 183223213100102.

201001312322381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137309883484900 + 63691428837481 = 11717930^2 + 7980691^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001312322381 - 2²² = 201001308128077 is a prime.

It is a super-2 number, since 2×201001312322381² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201001312322387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500656161190 + 100500656161191.

It is an arithmetic number, because the mean of its divisors is an integer number (100500656161191).

Almost surely, 2^{201001312322381} is an apocalyptic number.

It is an amenable number.

201001312322381 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001312322381 is an equidigital number, since it uses as much as digits as its factorization.

201001312322381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 201001312322381 its reverse (183223213100102), we get a palindrome (384224525422483).

The spelling of 201001312322381 in words is "two hundred one trillion, one billion, three hundred twelve million, three hundred twenty-two thousand, three hundred eighty-one".