221021202022011 has 6 divisors (see below), whose sum is σ = 319252847365140. Its totient is φ = 147347468014668.

The previous prime is 221021202022001. The next prime is 221021202022063. The reversal of 221021202022011 is 110220202120122.

It is a happy number.

221021202022011 is a `hidden beast` number, since 2 + 210 + 21 + 202 + 0 + 220 + 11 = 666.

It is not a de Polignac number, because 221021202022011 - 2¹³ = 221021202013819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221021202022001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12278955667881 + ... + 12278955667898.

It is an arithmetic number, because the mean of its divisors is an integer number (53208807894190).

Almost surely, 2^{221021202022011} is an apocalyptic number.

221021202022011 is a deficient number, since it is larger than the sum of its proper divisors (98231645343129).

221021202022011 is a wasteful number, since it uses less digits than its factorization.

221021202022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24557911335785 (or 24557911335782 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221021202022011 its reverse (110220202120122), we get a palindrome (331241404142133).

The spelling of 221021202022011 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred two million, twenty-two thousand, eleven".