2212040021 has 8 divisors (see below), whose sum is σ = 2340168000. Its totient is φ = 2085082560.

The previous prime is 2212039981. The next prime is 2212040027. The reversal of 2212040021 is 1200402122.

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 2212040021 - 2⁶ = 2212039957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2212039978 and 2212040005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212040027) 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, 288740 + ... + 296301.

It is an arithmetic number, because the mean of its divisors is an integer number (292521000).

Almost surely, 2^2212040021 is an apocalyptic number.

It is an amenable number.

2212040021 is a deficient number, since it is larger than the sum of its proper divisors (128127979).

2212040021 is a wasteful number, since it uses less digits than its factorization.

2212040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585259.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2212040021 is about 47032.3295298032. The cubic root of 2212040021 is about 1302.9597299934.

Adding to 2212040021 its reverse (1200402122), we get a palindrome (3412442143).

The spelling of 2212040021 in words is "two billion, two hundred twelve million, forty thousand, twenty-one".