211020302222011 has 4 divisors (see below), whose sum is σ = 212560596398952. Its totient is φ = 209480008045072.

The previous prime is 211020302221997. The next prime is 211020302222057. The reversal of 211020302222011 is 110222203020112.

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 211020302222011 - 2⁹ = 211020302221499 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 211020302222011.

It is not an unprimeable number, because it can be changed into a prime (211020302225011) 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, 770147088265 + ... + 770147088538.

It is an arithmetic number, because the mean of its divisors is an integer number (53140149099738).

Almost surely, 2^{211020302222011} is an apocalyptic number.

211020302222011 is a deficient number, since it is larger than the sum of its proper divisors (1540294176941).

211020302222011 is a wasteful number, since it uses less digits than its factorization.

211020302222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540294176940.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211020302222011 its reverse (110222203020112), we get a palindrome (321242505242123).

The spelling of 211020302222011 in words is "two hundred eleven trillion, twenty billion, three hundred two million, two hundred twenty-two thousand, eleven".