211021021100122 has 4 divisors (see below), whose sum is σ = 316531531650186. Its totient is φ = 105510510550060.

The previous prime is 211021021100063. The next prime is 211021021100129. The reversal of 211021021100122 is 221001120120112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 186008109433441 + 25012911666681 = 13638479^2 + 5001291^2 .

It is a super-2 number, since 2×211021021100122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211021021100096 and 211021021100105.

It is not an unprimeable number, because it can be changed into a prime (211021021100129) 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 as a sum of consecutive naturals, namely, 52755255275029 + ... + 52755255275032.

Almost surely, 2^{211021021100122} is an apocalyptic number.

211021021100122 is a deficient number, since it is larger than the sum of its proper divisors (105510510550064).

211021021100122 is a wasteful number, since it uses less digits than its factorization.

211021021100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105510510550063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211021021100122 its reverse (221001120120112), we get a palindrome (432022141220234).

The spelling of 211021021100122 in words is "two hundred eleven trillion, twenty-one billion, twenty-one million, one hundred thousand, one hundred twenty-two".