21220022010022 has 256 divisors, whose sum is σ = 37420467194880. Its totient is φ = 8939234304000.

The previous prime is 21220022009987. The next prime is 21220022010029. The reversal of 21220022010022 is 22001022002212.

It is a junction number, because it is equal to n+sod(n) for n = 21220022009978 and 21220022010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220022010029) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 50644443729 + ... + 50644444147.

It is an arithmetic number, because the mean of its divisors is an integer number (146173699980).

Almost surely, 2^{21220022010022} is an apocalyptic number.

21220022010022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220022010022 is a deficient number, since it is larger than the sum of its proper divisors (16200445184858).

21220022010022 is a wasteful number, since it uses less digits than its factorization.

21220022010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21220022010022 its reverse (22001022002212), we get a palindrome (43221044012234).

It can be divided in two parts, 212200 and 22010022, that added together give a palindrome (22222222).

The spelling of 21220022010022 in words is "twenty-one trillion, two hundred twenty billion, twenty-two million, ten thousand, twenty-two".