2212232021 has 2 divisors, whose sum is σ = 2212232022. Its totient is φ = 2212232020.

The previous prime is 2212232017. The next prime is 2212232047. The reversal of 2212232021 is 1202322122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1491040996 + 721191025 = 38614^2 + 26855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212232021 - 2² = 2212232017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212235021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106116010 + 1106116011.

It is an arithmetic number, because the mean of its divisors is an integer number (1106116011).

Almost surely, 2^2212232021 is an apocalyptic number.

It is an amenable number.

2212232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212232021 is an equidigital number, since it uses as much as digits as its factorization.

2212232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2212232021 is about 47034.3706346752. The cubic root of 2212232021 is about 1302.9974268747.

Adding to 2212232021 its reverse (1202322122), we get a palindrome (3414554143).

The spelling of 2212232021 in words is "two billion, two hundred twelve million, two hundred thirty-two thousand, twenty-one".