21112210112201 has 8 divisors (see below), whose sum is σ = 22736294159040. Its totient is φ = 19488135763152.

The previous prime is 21112210112167. The next prime is 21112210112243. The reversal of 21112210112201 is 10221101221112.

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

It is a cyclic number.

It is not a de Polignac number, because 21112210112201 - 2¹⁸ = 21112209850057 is a prime.

It is a super-2 number, since 2×21112210112201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21112210112201.

It is not an unprimeable number, because it can be changed into a prime (21112210102201) 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 7 ways as a sum of consecutive naturals, for example, 2461790 + ... + 6948728.

It is an arithmetic number, because the mean of its divisors is an integer number (2842036769880).

Almost surely, 2^{21112210112201} is an apocalyptic number.

It is an amenable number.

21112210112201 is a deficient number, since it is larger than the sum of its proper divisors (1624084046839).

21112210112201 is a wasteful number, since it uses less digits than its factorization.

21112210112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848895.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21112210112201 its reverse (10221101221112), we get a palindrome (31333311333313).

The spelling of 21112210112201 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred twelve thousand, two hundred one".