2227241021 has 2 divisors, whose sum is σ = 2227241022. Its totient is φ = 2227241020.

The previous prime is 2227240999. The next prime is 2227241053. The reversal of 2227241021 is 1201427222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1632564025 + 594676996 = 40405^2 + 24386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2227241021 - 2¹⁸ = 2226978877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2227541021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113620510 + 1113620511.

It is an arithmetic number, because the mean of its divisors is an integer number (1113620511).

Almost surely, 2^2227241021 is an apocalyptic number.

It is an amenable number.

2227241021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2227241021 is an equidigital number, since it uses as much as digits as its factorization.

2227241021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2227241021 is about 47193.6544569288. The cubic root of 2227241021 is about 1305.9375383951.

Adding to 2227241021 its reverse (1201427222), we get a palindrome (3428668243).

The spelling of 2227241021 in words is "two billion, two hundred twenty-seven million, two hundred forty-one thousand, twenty-one".