212212012152 has 64 divisors (see below), whose sum is σ = 632681786880. Its totient is φ = 57995828352.

The previous prime is 212212012151. The next prime is 212212012153. The reversal of 212212012152 is 251210212212.

212212012152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212212012151) and next prime (212212012153).

It is a super-2 number, since 2×212212012152² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212012151) 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 15 ways as a sum of consecutive naturals, for example, 27456283 + ... + 27464010.

It is an arithmetic number, because the mean of its divisors is an integer number (9885652920).

Almost surely, 2^212212012152 is an apocalyptic number.

It is an amenable number.

212212012152 is an abundant number, since it is smaller than the sum of its proper divisors (420469774728).

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

212212012152 is a wasteful number, since it uses less digits than its factorization.

212212012152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54920332 (or 54920328 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 212212012152 its reverse (251210212212), we get a palindrome (463422224364).

The spelling of 212212012152 in words is "two hundred twelve billion, two hundred twelve million, twelve thousand, one hundred fifty-two".