211211222000020 has 24 divisors (see below), whose sum is σ = 483865708582368. Its totient is φ = 76804080727200.

The previous prime is 211211221999937. The next prime is 211211222000071. The reversal of 211211222000020 is 20000222112112.

It is a happy number.

It is a super-2 number, since 2×211211222000020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211221999958 and 211211222000003.

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, 480025504326 + ... + 480025504765.

It is an arithmetic number, because the mean of its divisors is an integer number (20161071190932).

Almost surely, 2^{211211222000020} is an apocalyptic number.

211211222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211222000020 is an abundant number, since it is smaller than the sum of its proper divisors (272654486582348).

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

211211222000020 is a wasteful number, since it uses less digits than its factorization.

211211222000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960051009111 (or 960051009109 counting only the distinct ones).

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

Adding to 211211222000020 its reverse (20000222112112), we get a palindrome (231211444112132).

The spelling of 211211222000020 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, twenty", and thus it is an aban number.