2212122021 has 8 divisors (see below), whose sum is σ = 2957079840. Its totient is φ = 1470956112.

The previous prime is 2212122019. The next prime is 2212122023. The reversal of 2212122021 is 1202212122.

2212122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2212122019) and next prime (2212122023).

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

It is not a de Polignac number, because 2212122021 - 2¹ = 2212122019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212122023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946615 + ... + 948948.

It is an arithmetic number, because the mean of its divisors is an integer number (369634980).

Almost surely, 2^2212122021 is an apocalyptic number.

It is an amenable number.

2212122021 is a deficient number, since it is larger than the sum of its proper divisors (744957819).

2212122021 is a wasteful number, since it uses less digits than its factorization.

2212122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895955.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2212122021 is about 47033.2012625124. The cubic root of 2212122021 is about 1302.9758299700.

Adding to 2212122021 its reverse (1202212122), we get a palindrome (3414334143).

The spelling of 2212122021 in words is "two billion, two hundred twelve million, one hundred twenty-two thousand, twenty-one".