1212312126 has 32 divisors (see below), whose sum is σ = 2574478080. Its totient is φ = 379262336.

The previous prime is 1212312113. The next prime is 1212312139. The reversal of 1212312126 is 6212132121.

It is an interprime number because it is at equal distance from previous prime (1212312113) and next prime (1212312139).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 20065 + ... + 53171.

It is an arithmetic number, because the mean of its divisors is an integer number (80452440).

Almost surely, 2^1212312126 is an apocalyptic number.

1212312126 is an abundant number, since it is smaller than the sum of its proper divisors (1362165954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212312126 is a wasteful number, since it uses less digits than its factorization.

1212312126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33488.

The product of its digits is 288, while the sum is 21.

The square root of 1212312126 is about 34818.2728750293. The cubic root of 1212312126 is about 1066.2805395162.

Adding to 1212312126 its reverse (6212132121), we get a palindrome (7424444247).

The spelling of 1212312126 in words is "one billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty-six".