7022021 has 4 divisors (see below), whose sum is σ = 7039200. Its totient is φ = 7004844.

The previous prime is 7021999. The next prime is 7022033. The reversal of 7022021 is 1202207.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1202207 = 113 ⋅10639.

It is a cyclic number.

It is not a de Polignac number, because 7022021 - 2¹⁴ = 7005637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7021987 and 7022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7022051) 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, 7961 + ... + 8798.

It is an arithmetic number, because the mean of its divisors is an integer number (1759800).

Almost surely, 2^7022021 is an apocalyptic number.

It is an amenable number.

7022021 is a deficient number, since it is larger than the sum of its proper divisors (17179).

7022021 is a wasteful number, since it uses less digits than its factorization.

7022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17178.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 7022021 is about 2649.9096211003. The cubic root of 7022021 is about 191.4935019053.

Adding to 7022021 its reverse (1202207), we get a palindrome (8224228).

The spelling of 7022021 in words is "seven million, twenty-two thousand, twenty-one".