211222001220020 has 48 divisors (see below), whose sum is σ = 506933752442880. Its totient is φ = 72418836201984.

The previous prime is 211222001219987. The next prime is 211222001220047. The reversal of 211222001220020 is 20022100222112.

It is a happy number.

211222001220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211222001220020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98985101 + ... + 101096459.

It is an arithmetic number, because the mean of its divisors is an integer number (10561119842560).

Almost surely, 2^{211222001220020} is an apocalyptic number.

211222001220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222001220020 is an abundant number, since it is smaller than the sum of its proper divisors (295711751222860).

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

211222001220020 is a wasteful number, since it uses less digits than its factorization.

211222001220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825952 (or 2825950 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211222001220020 its reverse (20022100222112), we get a palindrome (231244101442132).

The spelling of 211222001220020 in words is "two hundred eleven trillion, two hundred twenty-two billion, one million, two hundred twenty thousand, twenty".