211222220221101 has 4 divisors (see below), whose sum is σ = 281629626961472. Its totient is φ = 140814813480732.

The previous prime is 211222220221093. The next prime is 211222220221141. The reversal of 211222220221101 is 101122022222112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211222220221101 - 2³ = 211222220221093 is a prime.

It is a super-2 number, since 2×211222220221101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222220221141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35203703370181 + ... + 35203703370186.

It is an arithmetic number, because the mean of its divisors is an integer number (70407406740368).

Almost surely, 2^{211222220221101} is an apocalyptic number.

It is an amenable number.

211222220221101 is a deficient number, since it is larger than the sum of its proper divisors (70407406740371).

211222220221101 is an equidigital number, since it uses as much as digits as its factorization.

211222220221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70407406740370.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211222220221101 its reverse (101122022222112), we get a palindrome (312344242443213).

The spelling of 211222220221101 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, one hundred one".