211210212021101 has 4 divisors (see below), whose sum is σ = 222326538969600. Its totient is φ = 200093885072604.

The previous prime is 211210212021043. The next prime is 211210212021103. The reversal of 211210212021101 is 101120212012112.

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 a cyclic number.

It is not a de Polignac number, because 211210212021101 - 2⁴⁶ = 140841467843437 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 211210212021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210212021103) 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, 5558163474221 + ... + 5558163474258.

It is an arithmetic number, because the mean of its divisors is an integer number (55581634742400).

Almost surely, 2^{211210212021101} is an apocalyptic number.

It is an amenable number.

211210212021101 is a deficient number, since it is larger than the sum of its proper divisors (11116326948499).

211210212021101 is a wasteful number, since it uses less digits than its factorization.

211210212021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116326948498.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211210212021101 its reverse (101120212012112), we get a palindrome (312330424033213).

The spelling of 211210212021101 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, twenty-one thousand, one hundred one".