21101223313101 has 8 divisors (see below), whose sum is σ = 28135091051424. Its totient is φ = 14067418891760.

The previous prime is 21101223313081. The next prime is 21101223313133. The reversal of 21101223313101 is 10131332210112.

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 21101223313101 - 2⁷ = 21101223312973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101223313151) 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, 15046095 + ... + 16388636.

It is an arithmetic number, because the mean of its divisors is an integer number (3516886381428).

Almost surely, 2^{21101223313101} is an apocalyptic number.

It is an amenable number.

21101223313101 is a deficient number, since it is larger than the sum of its proper divisors (7033867738323).

21101223313101 is a wasteful number, since it uses less digits than its factorization.

21101223313101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31658491.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21101223313101 its reverse (10131332210112), we get a palindrome (31232555523213).

The spelling of 21101223313101 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred one".