212261132626 has 32 divisors (see below), whose sum is σ = 337978338480. Its totient is φ = 99633801216.

The previous prime is 212261132623. The next prime is 212261132651. The reversal of 212261132626 is 626231162212.

It can be written as a sum of positive squares in 8 ways, for example, as 80655432001 + 131605700625 = 283999^2 + 362775^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 212261132591 and 212261132600.

It is not an unprimeable number, because it can be changed into a prime (212261132623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23044710 + ... + 23053918.

Almost surely, 2^212261132626 is an apocalyptic number.

212261132626 is a deficient number, since it is larger than the sum of its proper divisors (125717205854).

212261132626 is a wasteful number, since it uses less digits than its factorization.

212261132626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10878.

The product of its digits is 20736, while the sum is 34.

Adding to 212261132626 its reverse (626231162212), we get a palindrome (838492294838).

The spelling of 212261132626 in words is "two hundred twelve billion, two hundred sixty-one million, one hundred thirty-two thousand, six hundred twenty-six".