21202110110022 has 16 divisors (see below), whose sum is σ = 42452026566912. Its totient is φ = 7059402312200.

The previous prime is 21202110110021. The next prime is 21202110110029. The reversal of 21202110110022 is 22001101120212.

It is a junction number, because it is equal to n+sod(n) for n = 21202110109983 and 21202110110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202110110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1991925354 + ... + 1991935997.

It is an arithmetic number, because the mean of its divisors is an integer number (2653251660432).

Almost surely, 2^{21202110110022} is an apocalyptic number.

21202110110022 is an abundant number, since it is smaller than the sum of its proper divisors (21249916456890).

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

21202110110022 is a wasteful number, since it uses less digits than its factorization.

21202110110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983862243.

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

Adding to 21202110110022 its reverse (22001101120212), we get a palindrome (43203211230234).

The spelling of 21202110110022 in words is "twenty-one trillion, two hundred two billion, one hundred ten million, one hundred ten thousand, twenty-two".