21211020110022 has 16 divisors (see below), whose sum is σ = 43790493130752. Its totient is φ = 6842264551560.

The previous prime is 21211020109943. The next prime is 21211020110047. The reversal of 21211020110022 is 22001102011212.

It is a junction number, because it is equal to n+sod(n) for n = 21211020109983 and 21211020110010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57018871078 + ... + 57018871449.

It is an arithmetic number, because the mean of its divisors is an integer number (2736905820672).

Almost surely, 2^{21211020110022} is an apocalyptic number.

21211020110022 is an abundant number, since it is smaller than the sum of its proper divisors (22579473020730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211020110022 is a wasteful number, since it uses less digits than its factorization.

21211020110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114037742563.

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

Adding to 21211020110022 its reverse (22001102011212), we get a palindrome (43212122121234).

The spelling of 21211020110022 in words is "twenty-one trillion, two hundred eleven billion, twenty million, one hundred ten thousand, twenty-two".