2212050021 has 4 divisors (see below), whose sum is σ = 2949400032. Its totient is φ = 1474700012.

The previous prime is 2212049947. The next prime is 2212050037. The reversal of 2212050021 is 1200502122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2212050021 - 2¹³ = 2212041829 is a prime.

It is a super-2 number, since 2×2212050021² = 9786330590812200882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212050521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368675001 + ... + 368675006.

It is an arithmetic number, because the mean of its divisors is an integer number (737350008).

Almost surely, 2^2212050021 is an apocalyptic number.

It is an amenable number.

2212050021 is a deficient number, since it is larger than the sum of its proper divisors (737350011).

2212050021 is an equidigital number, since it uses as much as digits as its factorization.

2212050021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737350010.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2212050021 is about 47032.4358395353. The cubic root of 2212050021 is about 1302.9616934265.

Adding to 2212050021 its reverse (1200502122), we get a palindrome (3412552143).

The spelling of 2212050021 in words is "two billion, two hundred twelve million, fifty thousand, twenty-one".