201000210111 has 12 divisors (see below), whose sum is σ = 291853710720. Its totient is φ = 133298567520.

The previous prime is 201000210101. The next prime is 201000210121. The reversal of 201000210111 is 111012000102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201000210101) and next prime (201000210121).

It is a de Polignac number, because none of the positive numbers 2^k-201000210111 is a prime.

It is a super-2 number, since 2×201000210111² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201000210093 and 201000210102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000210101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58462566 + ... + 58466003.

It is an arithmetic number, because the mean of its divisors is an integer number (24321142560).

Almost surely, 2^201000210111 is an apocalyptic number.

201000210111 is a deficient number, since it is larger than the sum of its proper divisors (90853500609).

201000210111 is a wasteful number, since it uses less digits than its factorization.

201000210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116928766 (or 116928763 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201000210111 its reverse (111012000102), we get a palindrome (312012210213).

The spelling of 201000210111 in words is "two hundred one billion, two hundred ten thousand, one hundred eleven".