211222101000220 has 12 divisors (see below), whose sum is σ = 443566412100504. Its totient is φ = 84488840400080.

The previous prime is 211222101000137. The next prime is 211222101000227. The reversal of 211222101000220 is 22000101222112.

It is a happy number.

It is a super-2 number, since 2×211222101000220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222101000194 and 211222101000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222101000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280552524986 + ... + 5280552525025.

It is an arithmetic number, because the mean of its divisors is an integer number (36963867675042).

Almost surely, 2^{211222101000220} is an apocalyptic number.

211222101000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222101000220 is an abundant number, since it is smaller than the sum of its proper divisors (232344311100284).

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

211222101000220 is a wasteful number, since it uses less digits than its factorization.

211222101000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561105050020 (or 10561105050018 counting only the distinct ones).

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

Adding to 211222101000220 its reverse (22000101222112), we get a palindrome (233222202222332).

The spelling of 211222101000220 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred one million, two hundred twenty", and thus it is an aban number.