2211022021 has 8 divisors (see below), whose sum is σ = 2457910784. Its totient is φ = 1975106160.

The previous prime is 2211022019. The next prime is 2211022027. The reversal of 2211022021 is 1202201122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2211022021 - 2¹ = 2211022019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211021992 and 2211022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211022027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2742801 + ... + 2743606.

It is an arithmetic number, because the mean of its divisors is an integer number (307238848).

Almost surely, 2^2211022021 is an apocalyptic number.

It is an amenable number.

2211022021 is a deficient number, since it is larger than the sum of its proper divisors (246888763).

2211022021 is a wasteful number, since it uses less digits than its factorization.

2211022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486451.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2211022021 is about 47021.5059414307. The cubic root of 2211022021 is about 1302.7598215348.

Adding to 2211022021 its reverse (1202201122), we get a palindrome (3413223143).

The spelling of 2211022021 in words is "two billion, two hundred eleven million, twenty-two thousand, twenty-one".