22121100210022 has 16 divisors (see below), whose sum is σ = 36198615365712. Its totient is φ = 10054920165120.

The previous prime is 22121100210007. The next prime is 22121100210049. The reversal of 22121100210022 is 22001200112122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22121100209978 and 22121100210005.

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, 4453203 + ... + 8004574.

It is an arithmetic number, because the mean of its divisors is an integer number (2262413460357).

Almost surely, 2^{22121100210022} is an apocalyptic number.

22121100210022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121100210022 is a deficient number, since it is larger than the sum of its proper divisors (14077515155690).

22121100210022 is a wasteful number, since it uses less digits than its factorization.

22121100210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538503.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22121100210022 its reverse (22001200112122), we get a palindrome (44122300322144).

The spelling of 22121100210022 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, two hundred ten thousand, twenty-two".