2233451021 has 2 divisors, whose sum is σ = 2233451022. Its totient is φ = 2233451020.

The previous prime is 2233451009. The next prime is 2233451029. The reversal of 2233451021 is 1201543322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1826622121 + 406828900 = 42739^2 + 20170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2233451021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2233451029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116725510 + 1116725511.

It is an arithmetic number, because the mean of its divisors is an integer number (1116725511).

Almost surely, 2^2233451021 is an apocalyptic number.

It is an amenable number.

2233451021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2233451021 is an equidigital number, since it uses as much as digits as its factorization.

2233451021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2233451021 is about 47259.4014033187. The cubic root of 2233451021 is about 1307.1501517237.

Adding to 2233451021 its reverse (1201543322), we get a palindrome (3434994343).

The spelling of 2233451021 in words is "two billion, two hundred thirty-three million, four hundred fifty-one thousand, twenty-one".