210120021022211 has 4 divisors (see below), whose sum is σ = 210173746421424. Its totient is φ = 210066295623000.

The previous prime is 210120021022127. The next prime is 210120021022253. The reversal of 210120021022211 is 112220120021012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120021022211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210120021022211.

It is not an unprimeable number, because it can be changed into a prime (210120021024211) 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 3 ways as a sum of consecutive naturals, for example, 26862693740 + ... + 26862701561.

It is an arithmetic number, because the mean of its divisors is an integer number (52543436605356).

Almost surely, 2^{210120021022211} is an apocalyptic number.

210120021022211 is a deficient number, since it is larger than the sum of its proper divisors (53725399213).

210120021022211 is an equidigital number, since it uses as much as digits as its factorization.

210120021022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53725399212.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210120021022211 its reverse (112220120021012), we get a palindrome (322340141043223).

The spelling of 210120021022211 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, twenty-two thousand, two hundred eleven".