21101100220022 has 16 divisors (see below), whose sum is σ = 32743566489600. Its totient is φ = 10186588722240.

The previous prime is 21101100220007. The next prime is 21101100220037. The reversal of 21101100220022 is 22002200110112.

It is an interprime number because it is at equal distance from previous prime (21101100220007) and next prime (21101100220037).

It is a junction number, because it is equal to n+sod(n) for n = 21101100219979 and 21101100220006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1377122 + ... + 6640682.

It is an arithmetic number, because the mean of its divisors is an integer number (2046472905600).

Almost surely, 2^{21101100220022} is an apocalyptic number.

21101100220022 is a deficient number, since it is larger than the sum of its proper divisors (11642466269578).

21101100220022 is a wasteful number, since it uses less digits than its factorization.

21101100220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332711.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21101100220022 its reverse (22002200110112), we get a palindrome (43103300330134).

The spelling of 21101100220022 in words is "twenty-one trillion, one hundred one billion, one hundred million, two hundred twenty thousand, twenty-two".