21201111200022 has 64 divisors (see below), whose sum is σ = 46900463554560. Its totient is φ = 6346789271424.

The previous prime is 21201111199991. The next prime is 21201111200033. The reversal of 21201111200022 is 22000211110212.

It is a super-2 number, since 2×21201111200022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21201111199974 and 21201111200010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60312423 + ... + 60662925.

It is an arithmetic number, because the mean of its divisors is an integer number (732819743040).

Almost surely, 2^{21201111200022} is an apocalyptic number.

21201111200022 is an abundant number, since it is smaller than the sum of its proper divisors (25699352354538).

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

21201111200022 is a wasteful number, since it uses less digits than its factorization.

21201111200022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371517.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21201111200022 its reverse (22000211110212), we get a palindrome (43201322310234).

The spelling of 21201111200022 in words is "twenty-one trillion, two hundred one billion, one hundred eleven million, two hundred thousand, twenty-two".