21202222222122 has 8 divisors (see below), whose sum is σ = 42404444444256. Its totient is φ = 7067407407372.

The previous prime is 21202222222099. The next prime is 21202222222183. The reversal of 21202222222122 is 22122222220212.

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

21202222222122 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21202222222092 and 21202222222101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766851851838 + ... + 1766851851849.

It is an arithmetic number, because the mean of its divisors is an integer number (5300555555532).

Almost surely, 2^{21202222222122} is an apocalyptic number.

21202222222122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21202222222122 is a wasteful number, since it uses less digits than its factorization.

21202222222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533703703692.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21202222222122 its reverse (22122222220212), we get a palindrome (43324444442334).

The spelling of 21202222222122 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".