2226164021 has 4 divisors (see below), whose sum is σ = 2227476000. Its totient is φ = 2224852044.

The previous prime is 2226164011. The next prime is 2226164027. The reversal of 2226164021 is 1204616222.

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: 1204616222 = 2 ⋅602308111.

It is a cyclic number.

It is not a de Polignac number, because 2226164021 - 2¹⁸ = 2225901877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2226164027) 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, 653441 + ... + 656838.

It is an arithmetic number, because the mean of its divisors is an integer number (556869000).

Almost surely, 2^2226164021 is an apocalyptic number.

It is an amenable number.

2226164021 is a deficient number, since it is larger than the sum of its proper divisors (1311979).

2226164021 is a wasteful number, since it uses less digits than its factorization.

2226164021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311978.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2226164021 is about 47182.2426448765. The cubic root of 2226164021 is about 1305.7270056503.

The spelling of 2226164021 in words is "two billion, two hundred twenty-six million, one hundred sixty-four thousand, twenty-one".