201002021111 has 4 divisors (see below), whose sum is σ = 201003223800. Its totient is φ = 201000818424.

The previous prime is 201002021089. The next prime is 201002021113. The reversal of 201002021111 is 111120200102.

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 201002021111 - 2⁶ = 201002021047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002021092 and 201002021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300476 + ... + 701633.

It is an arithmetic number, because the mean of its divisors is an integer number (50250805950).

Almost surely, 2^201002021111 is an apocalyptic number.

201002021111 is a deficient number, since it is larger than the sum of its proper divisors (1202689).

201002021111 is a wasteful number, since it uses less digits than its factorization.

201002021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202688.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201002021111 its reverse (111120200102), we get a palindrome (312122221213).

The spelling of 201002021111 in words is "two hundred one billion, two million, twenty-one thousand, one hundred eleven".