211020102111222 has 192 divisors, whose sum is σ = 493845745536000. Its totient is φ = 64948971757824.

The previous prime is 211020102111179. The next prime is 211020102111229. The reversal of 211020102111222 is 222111201020112.

211020102111222 is a `hidden beast` number, since 21 + 10 + 201 + 0 + 211 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211020102111195 and 211020102111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020102111229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1203616104 + ... + 1203791412.

It is an arithmetic number, because the mean of its divisors is an integer number (2572113258000).

Almost surely, 2^{211020102111222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211020102111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246922872768000).

211020102111222 is an abundant number, since it is smaller than the sum of its proper divisors (282825643424778).

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

211020102111222 is a wasteful number, since it uses less digits than its factorization.

211020102111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175995 (or 175992 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211020102111222 its reverse (222111201020112), we get a palindrome (433131303131334).

The spelling of 211020102111222 in words is "two hundred eleven trillion, twenty billion, one hundred two million, one hundred eleven thousand, two hundred twenty-two".