21100121212022 has 8 divisors (see below), whose sum is σ = 31666726613016. Its totient is φ = 10544545674352.

The previous prime is 21100121212021. The next prime is 21100121212057. The reversal of 21100121212022 is 22021212100112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100121212021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2757461048 + ... + 2757468699.

It is an arithmetic number, because the mean of its divisors is an integer number (3958340826627).

Almost surely, 2^{21100121212022} is an apocalyptic number.

21100121212022 is a deficient number, since it is larger than the sum of its proper divisors (10566605400994).

21100121212022 is a wasteful number, since it uses less digits than its factorization.

21100121212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514931662.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21100121212022 its reverse (22021212100112), we get a palindrome (43121333312134).

The spelling of 21100121212022 in words is "twenty-one trillion, one hundred billion, one hundred twenty-one million, two hundred twelve thousand, twenty-two".