20211100222123 has 8 divisors (see below), whose sum is σ = 20682495993456. Its totient is φ = 19739766732000.

The previous prime is 20211100222109. The next prime is 20211100222133. The reversal of 20211100222123 is 32122200111202.

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 20211100222123 - 2²⁹ = 20210563351211 is a prime.

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 20211100222123.

It is not an unprimeable number, because it can be changed into a prime (20211100222133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14913388 + ... + 16212073.

It is an arithmetic number, because the mean of its divisors is an integer number (2585311999182).

Almost surely, 2^{20211100222123} is an apocalyptic number.

20211100222123 is a deficient number, since it is larger than the sum of its proper divisors (471395771333).

20211100222123 is a wasteful number, since it uses less digits than its factorization.

20211100222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31140605.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20211100222123 its reverse (32122200111202), we get a palindrome (52333300333325).

The spelling of 20211100222123 in words is "twenty trillion, two hundred eleven billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-three".