201042020381 has 2 divisors, whose sum is σ = 201042020382. Its totient is φ = 201042020380.

The previous prime is 201042020371. The next prime is 201042020471. The reversal of 201042020381 is 183020240102.

It is a happy number.

201042020381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188652104281 + 12389916100 = 434341^2 + 111310^2 .

It is a cyclic number.

It is not a de Polignac number, because 201042020381 - 2⁶ = 201042020317 is a prime.

It is a super-2 number, since 2×201042020381² (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 (201042020371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521010190 + 100521010191.

It is an arithmetic number, because the mean of its divisors is an integer number (100521010191).

Almost surely, 2^201042020381 is an apocalyptic number.

It is an amenable number.

201042020381 is a deficient number, since it is larger than the sum of its proper divisors (1).

201042020381 is an equidigital number, since it uses as much as digits as its factorization.

201042020381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 201042020381 its reverse (183020240102), we get a palindrome (384062260483).

The spelling of 201042020381 in words is "two hundred one billion, forty-two million, twenty thousand, three hundred eighty-one".