21202220220022 has 8 divisors (see below), whose sum is σ = 31807577025000. Its totient is φ = 10599694545024.

The previous prime is 21202220219941. The next prime is 21202220220031. The reversal of 21202220220022 is 22002202220212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×21202220220022³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707763772 + ... + 707793727.

It is an arithmetic number, because the mean of its divisors is an integer number (3975947128125).

Almost surely, 2^{21202220220022} is an apocalyptic number.

21202220220022 is a deficient number, since it is larger than the sum of its proper divisors (10605356804978).

21202220220022 is a wasteful number, since it uses less digits than its factorization.

21202220220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415564990.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 21202220220022 its reverse (22002202220212), we get a palindrome (43204422440234).

The spelling of 21202220220022 in words is "twenty-one trillion, two hundred two billion, two hundred twenty million, two hundred twenty thousand, twenty-two".