21202211101 has 8 divisors (see below), whose sum is σ = 21534331520. Its totient is φ = 20871684288.

The previous prime is 21202211081. The next prime is 21202211119. The reversal of 21202211101 is 10111220212.

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 21202211101 - 2¹⁹ = 21201686813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202211161) 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, 371571 + ... + 424816.

It is an arithmetic number, because the mean of its divisors is an integer number (2691791440).

Almost surely, 2^21202211101 is an apocalyptic number.

It is an amenable number.

21202211101 is a deficient number, since it is larger than the sum of its proper divisors (332120419).

21202211101 is an equidigital number, since it uses as much as digits as its factorization.

21202211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796803.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21202211101 its reverse (10111220212), we get a palindrome (31313431313).

The spelling of 21202211101 in words is "twenty-one billion, two hundred two million, two hundred eleven thousand, one hundred one".