2022421729 has 2 divisors, whose sum is σ = 2022421730. Its totient is φ = 2022421728.

The previous prime is 2022421721. The next prime is 2022421759. The reversal of 2022421729 is 9271242202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152466704 + 869955025 = 33948^2 + 29495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022421729 - 2³ = 2022421721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2022421729.

It is not a weakly prime, because it can be changed into another prime (2022421721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011210864 + 1011210865.

It is an arithmetic number, because the mean of its divisors is an integer number (1011210865).

Almost surely, 2^2022421729 is an apocalyptic number.

It is an amenable number.

2022421729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022421729 is an equidigital number, since it uses as much as digits as its factorization.

2022421729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2022421729 is about 44971.3434200047. The cubic root of 2022421729 is about 1264.6118321381.

The spelling of 2022421729 in words is "two billion, twenty-two million, four hundred twenty-one thousand, seven hundred twenty-nine".