21202101210222 has 16 divisors (see below), whose sum is σ = 47115780467280. Its totient is φ = 7067367070056.

The previous prime is 21202101210221. The next prime is 21202101210247. The reversal of 21202101210222 is 22201210120212.

It is a happy number.

21202101210222 is a `hidden beast` number, since 2 + 1 + 20 + 210 + 1 + 210 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21202101210195 and 21202101210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202101210221) 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, 196315751893 + ... + 196315752000.

It is an arithmetic number, because the mean of its divisors is an integer number (2944736279205).

Almost surely, 2^{21202101210222} is an apocalyptic number.

21202101210222 is an abundant number, since it is smaller than the sum of its proper divisors (25913679257058).

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

21202101210222 is a wasteful number, since it uses less digits than its factorization.

21202101210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392631503904 (or 392631503898 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21202101210222 its reverse (22201210120212), we get a palindrome (43403311330434).

The spelling of 21202101210222 in words is "twenty-one trillion, two hundred two billion, one hundred one million, two hundred ten thousand, two hundred twenty-two".