2222121007 has 2 divisors, whose sum is σ = 2222121008. Its totient is φ = 2222121006.

The previous prime is 2222120987. The next prime is 2222121053. The reversal of 2222121007 is 7001212222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2222121007 - 2¹⁹ = 2221596719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222121067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111060503 + 1111060504.

It is an arithmetic number, because the mean of its divisors is an integer number (1111060504).

Almost surely, 2^2222121007 is an apocalyptic number.

2222121007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222121007 is an equidigital number, since it uses as much as digits as its factorization.

2222121007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 2222121007 is about 47139.3785173288. The cubic root of 2222121007 is about 1304.9360678789.

Adding to 2222121007 its reverse (7001212222), we get a palindrome (9223333229).

The spelling of 2222121007 in words is "two billion, two hundred twenty-two million, one hundred twenty-one thousand, seven".