2521222106 has 36 divisors (see below), whose sum is σ = 4215187962. Its totient is φ = 1129669632.

The previous prime is 2521222103. The next prime is 2521222117. The reversal of 2521222106 is 6012221252.

It can be written as a sum of positive squares in 9 ways, for example, as 283080625 + 2238141481 = 16825^2 + 47309^2 .

It is not an unprimeable number, because it can be changed into a prime (2521222103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5614970 + ... + 5615418.

Almost surely, 2^2521222106 is an apocalyptic number.

2521222106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2521222106 is a deficient number, since it is larger than the sum of its proper divisors (1693965856).

2521222106 is an equidigital number, since it uses as much as digits as its factorization.

2521222106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2521222106 is about 50211.7725837278. The cubic root of 2521222106 is about 1361.0383696974.

Adding to 2521222106 its reverse (6012221252), we get a palindrome (8533443358).

The spelling of 2521222106 in words is "two billion, five hundred twenty-one million, two hundred twenty-two thousand, one hundred six".