21022012002222 has 96 divisors (see below), whose sum is σ = 57256046025984. Its totient is φ = 5460262814160.

The previous prime is 21022012002179. The next prime is 21022012002283. The reversal of 21022012002222 is 22220021022012.

21022012002222 is a `hidden beast` number, since 21 + 0 + 220 + 1 + 200 + 2 + 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 = 21022012002195 and 21022012002204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62507488 + ... + 62842899.

It is an arithmetic number, because the mean of its divisors is an integer number (596417146104).

Almost surely, 2^{21022012002222} is an apocalyptic number.

21022012002222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21022012002222 is an abundant number, since it is smaller than the sum of its proper divisors (36234034023762).

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

21022012002222 is a wasteful number, since it uses less digits than its factorization.

21022012002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125350435 (or 125350410 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21022012002222 its reverse (22220021022012), we get a palindrome (43242033024234).

The spelling of 21022012002222 in words is "twenty-one trillion, twenty-two billion, twelve million, two thousand, two hundred twenty-two".