7231212126 has 12 divisors (see below), whose sum is σ = 15667626312. Its totient is φ = 2410404036.

The previous prime is 7231212101. The next prime is 7231212127. The reversal of 7231212126 is 6212121327.

It is a super-2 number, since 2×7231212126² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7231212126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7231212127) 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 5 ways as a sum of consecutive naturals, for example, 200866986 + ... + 200867021.

It is an arithmetic number, because the mean of its divisors is an integer number (1305635526).

Almost surely, 2^7231212126 is an apocalyptic number.

7231212126 is an abundant number, since it is smaller than the sum of its proper divisors (8436414186).

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

7231212126 is a wasteful number, since it uses less digits than its factorization.

7231212126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401734015 (or 401734012 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7231212126 is about 85036.5340662471. The cubic root of 7231212126 is about 1933.7650225147.

The spelling of 7231212126 in words is "seven billion, two hundred thirty-one million, two hundred twelve thousand, one hundred twenty-six".