2212405251 has 16 divisors (see below), whose sum is σ = 3371956224. Its totient is φ = 1263979584.

The previous prime is 2212405249. The next prime is 2212405253. The reversal of 2212405251 is 1525042122.

It is an interprime number because it is at equal distance from previous prime (2212405249) and next prime (2212405253).

It is not a de Polignac number, because 2212405251 - 2¹ = 2212405249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2212405253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167671 + ... + 180383.

It is an arithmetic number, because the mean of its divisors is an integer number (210747264).

Almost surely, 2^2212405251 is an apocalyptic number.

2212405251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2212405251 is a deficient number, since it is larger than the sum of its proper divisors (1159550973).

2212405251 is a wasteful number, since it uses less digits than its factorization.

2212405251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21010.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2212405251 is about 47036.2121242772. The cubic root of 2212405251 is about 1303.0314366215.

Adding to 2212405251 its reverse (1525042122), we get a palindrome (3737447373).

The spelling of 2212405251 in words is "two billion, two hundred twelve million, four hundred five thousand, two hundred fifty-one".