201021100212111 has 8 divisors (see below), whose sum is σ = 268260595141680. Its totient is φ = 133897836045312.

The previous prime is 201021100212013. The next prime is 201021100212131. The reversal of 201021100212111 is 111212001120102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-201021100212111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021100212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29057686656 + ... + 29057693573.

It is an arithmetic number, because the mean of its divisors is an integer number (33532574392710).

Almost surely, 2^{201021100212111} is an apocalyptic number.

201021100212111 is a deficient number, since it is larger than the sum of its proper divisors (67239494929569).

201021100212111 is a wasteful number, since it uses less digits than its factorization.

201021100212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58115381385.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201021100212111 its reverse (111212001120102), we get a palindrome (312233101332213).

The spelling of 201021100212111 in words is "two hundred one trillion, twenty-one billion, one hundred million, two hundred twelve thousand, one hundred eleven".