21211022221022 has 8 divisors (see below), whose sum is σ = 31828728254400. Its totient is φ = 10601446136224.

The previous prime is 21211022221021. The next prime is 21211022221087. The reversal of 21211022221022 is 22012222011212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21211022220985 and 21211022221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211022221021) 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, 2032480622 + ... + 2032491057.

It is an arithmetic number, because the mean of its divisors is an integer number (3978591031800).

Almost surely, 2^{21211022221022} is an apocalyptic number.

21211022221022 is a deficient number, since it is larger than the sum of its proper divisors (10617706033378).

21211022221022 is a wasteful number, since it uses less digits than its factorization.

21211022221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064974290.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21211022221022 its reverse (22012222011212), we get a palindrome (43223244232234).

The spelling of 21211022221022 in words is "twenty-one trillion, two hundred eleven billion, twenty-two million, two hundred twenty-one thousand, twenty-two".