21022222026 has 16 divisors (see below), whose sum is σ = 45278632224. Its totient is φ = 6468375984.

The previous prime is 21022222021. The next prime is 21022222027. The reversal of 21022222026 is 62022222012.

It is a junction number, because it is equal to n+sod(n) for n = 21022221993 and 21022222011.

It is not an unprimeable number, because it can be changed into a prime (21022222021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134757756 + ... + 134757911.

It is an arithmetic number, because the mean of its divisors is an integer number (2829914514).

Almost surely, 2^21022222026 is an apocalyptic number.

21022222026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21022222026 is an abundant number, since it is smaller than the sum of its proper divisors (24256410198).

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

21022222026 is a wasteful number, since it uses less digits than its factorization.

21022222026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269515685.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21022222026 its reverse (62022222012), we get a palindrome (83044444038).

The spelling of 21022222026 in words is "twenty-one billion, twenty-two million, two hundred twenty-two thousand, twenty-six".