211211022221122 has 16 divisors (see below), whose sum is σ = 394992041556672. Its totient is φ = 82290008657520.

The previous prime is 211211022221119. The next prime is 211211022221123. The reversal of 211211022221122 is 221122220112112.

It is a super-2 number, since 2×211211022221122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 211211022221093 and 211211022221102.

It is not an unprimeable number, because it can be changed into a prime (211211022221123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685750071993 + ... + 685750072300.

It is an arithmetic number, because the mean of its divisors is an integer number (24687002597292).

Almost surely, 2^{211211022221122} is an apocalyptic number.

211211022221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211211022221122 is a deficient number, since it is larger than the sum of its proper divisors (183781019335550).

211211022221122 is a wasteful number, since it uses less digits than its factorization.

211211022221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371500144313.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211211022221122 its reverse (221122220112112), we get a palindrome (432333242333234).

The spelling of 211211022221122 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".