111000212001 has 24 divisors (see below), whose sum is σ = 191292884640. Its totient is φ = 63428691816.

The previous prime is 111000211951. The next prime is 111000212017. The reversal of 111000212001 is 100212000111.

It is a happy number.

It is not a de Polignac number, because 111000212001 - 2²² = 110996017697 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111000212201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41948871 + ... + 41951516.

It is an arithmetic number, because the mean of its divisors is an integer number (7970536860).

Almost surely, 2^111000212001 is an apocalyptic number.

It is an amenable number.

111000212001 is a deficient number, since it is larger than the sum of its proper divisors (80292672639).

111000212001 is an equidigital number, since it uses as much as digits as its factorization.

111000212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83900410 (or 83900397 counting only the distinct ones).

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

Adding to 111000212001 its reverse (100212000111), we get a palindrome (211212212112).

The spelling of 111000212001 in words is "one hundred eleven billion, two hundred twelve thousand, one".