21020110202211 has 8 divisors (see below), whose sum is σ = 28026841744464. Its totient is φ = 14013392730720.

The previous prime is 21020110202159. The next prime is 21020110202219. The reversal of 21020110202211 is 11220201102012.

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

It is not a de Polignac number, because 21020110202211 - 2⁷ = 21020110202083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21020110202219) 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, 685521 + ... + 6519981.

It is an arithmetic number, because the mean of its divisors is an integer number (3503355218058).

Almost surely, 2^{21020110202211} is an apocalyptic number.

21020110202211 is a deficient number, since it is larger than the sum of its proper divisors (7006731542253).

21020110202211 is a wasteful number, since it uses less digits than its factorization.

21020110202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035381.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21020110202211 its reverse (11220201102012), we get a palindrome (32240311304223).

The spelling of 21020110202211 in words is "twenty-one trillion, twenty billion, one hundred ten million, two hundred two thousand, two hundred eleven".