211212211221122 has 8 divisors (see below), whose sum is σ = 316819116855372. Its totient is φ = 105605838936000.

The previous prime is 211212211221103. The next prime is 211212211221139. The reversal of 211212211221122 is 221122112212112.

It can be written as a sum of positive squares in 2 ways, for example, as 153678939486361 + 57533271734761 = 12396731^2 + 7585069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211212211221122² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132345779 + ... + 133932182.

Almost surely, 2^{211212211221122} is an apocalyptic number.

211212211221122 is a deficient number, since it is larger than the sum of its proper divisors (105606905634250).

211212211221122 is a wasteful number, since it uses less digits than its factorization.

211212211221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266674564.

The product of its digits is 256, while the sum is 23.

Adding to 211212211221122 its reverse (221122112212112), we get a palindrome (432334323433234).

The spelling of 211212211221122 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-two".