201021102119999 has 4 divisors (see below), whose sum is σ = 229738402422864. Its totient is φ = 172303801817136.

The previous prime is 201021102119939. The next prime is 201021102120017. The reversal of 201021102119999 is 999911201120102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201021102119999 - 2⁸ = 201021102119743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021102119939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14358650151422 + ... + 14358650151435.

It is an arithmetic number, because the mean of its divisors is an integer number (57434600605716).

Almost surely, 2^{201021102119999} is an apocalyptic number.

201021102119999 is a deficient number, since it is larger than the sum of its proper divisors (28717300302865).

201021102119999 is an equidigital number, since it uses as much as digits as its factorization.

201021102119999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717300302864.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 201021102119999 in words is "two hundred one trillion, twenty-one billion, one hundred two million, one hundred nineteen thousand, nine hundred ninety-nine".