210213121301111 has 4 divisors (see below), whose sum is σ = 211313713559424. Its totient is φ = 209112529042800.

The previous prime is 210213121301063. The next prime is 210213121301129. The reversal of 210213121301111 is 111103121312012.

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

It is a cyclic number.

It is not a de Polignac number, because 210213121301111 - 2¹⁰ = 210213121300087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210213121300111) 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, 550296128870 + ... + 550296129251.

It is an arithmetic number, because the mean of its divisors is an integer number (52828428389856).

Almost surely, 2^{210213121301111} is an apocalyptic number.

210213121301111 is a deficient number, since it is larger than the sum of its proper divisors (1100592258313).

210213121301111 is a wasteful number, since it uses less digits than its factorization.

210213121301111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100592258312.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 210213121301111 its reverse (111103121312012), we get a palindrome (321316242613123).

The spelling of 210213121301111 in words is "two hundred ten trillion, two hundred thirteen billion, one hundred twenty-one million, three hundred one thousand, one hundred eleven".