211222000020 has 48 divisors (see below), whose sum is σ = 591508387008. Its totient is φ = 56317601280.

The previous prime is 211222000013. The next prime is 211222000057. The reversal of 211222000020 is 20000222112.

It is a super-2 number, since 2×211222000020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 159580 + ... + 669260.

It is an arithmetic number, because the mean of its divisors is an integer number (12323091396).

Almost surely, 2^211222000020 is an apocalyptic number.

211222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222000020 is an abundant number, since it is smaller than the sum of its proper divisors (380286386988).

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

211222000020 is a wasteful number, since it uses less digits than its factorization.

211222000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516600 (or 516598 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 211222000020 its reverse (20000222112), we get a palindrome (231222222132).

The spelling of 211222000020 in words is "two hundred eleven billion, two hundred twenty-two million, twenty", and thus it is an aban number.