211222111010020 has 96 divisors (see below), whose sum is σ = 489655443634560. Its totient is φ = 75894150773760.

The previous prime is 211222111009997. The next prime is 211222111010051. The reversal of 211222111010020 is 20010111222112.

211222111010020 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 2×211222111010020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222111009976 and 211222111010003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25620199 + ... + 32845681.

It is an arithmetic number, because the mean of its divisors is an integer number (5100577537860).

Almost surely, 2^{211222111010020} is an apocalyptic number.

211222111010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222111010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244827721817280).

211222111010020 is an abundant number, since it is smaller than the sum of its proper divisors (278433332624540).

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

211222111010020 is a wasteful number, since it uses less digits than its factorization.

211222111010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227085 (or 7227083 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211222111010020 its reverse (20010111222112), we get a palindrome (231232222232132).

The spelling of 211222111010020 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, ten thousand, twenty".