211011221021022 has 64 divisors (see below), whose sum is σ = 471667230144000. Its totient is φ = 69924658415040.

The previous prime is 211011221021021. The next prime is 211011221021039. The reversal of 211011221021022 is 220120122110112.

211011221021022 is a `hidden beast` number, since 2 + 110 + 112 + 210 + 210 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211011221020986 and 211011221021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011221021021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4484122 + ... + 21026882.

It is an arithmetic number, because the mean of its divisors is an integer number (7369800471000).

Almost surely, 2^{211011221021022} is an apocalyptic number.

211011221021022 is an abundant number, since it is smaller than the sum of its proper divisors (260656009122978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211011221021022 is a wasteful number, since it uses less digits than its factorization.

211011221021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16544158 (or 16544152 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211011221021022 its reverse (220120122110112), we get a palindrome (431131343131134).

The spelling of 211011221021022 in words is "two hundred eleven trillion, eleven billion, two hundred twenty-one million, twenty-one thousand, twenty-two".