211021021222 has 48 divisors (see below), whose sum is σ = 366360044400. Its totient is φ = 90839232000.

The previous prime is 211021021213. The next prime is 211021021229. The reversal of 211021021222 is 222120120112.

It is a happy number.

211021021222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211021021196 and 211021021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021021229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17875722 + ... + 17887522.

It is an arithmetic number, because the mean of its divisors is an integer number (7632500925).

Almost surely, 2^211021021222 is an apocalyptic number.

211021021222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211021021222 is a deficient number, since it is larger than the sum of its proper divisors (155339023178).

211021021222 is a wasteful number, since it uses less digits than its factorization.

211021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15733 (or 15722 counting only the distinct ones).

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

Adding to 211021021222 its reverse (222120120112), we get a palindrome (433141141334).

The spelling of 211021021222 in words is "two hundred eleven billion, twenty-one million, twenty-one thousand, two hundred twenty-two".