212012234421 has 16 divisors (see below), whose sum is σ = 304446577344. Its totient is φ = 130461030144.

The previous prime is 212012234377. The next prime is 212012234429. The reversal of 212012234421 is 124432210212.

It is not a de Polignac number, because 212012234421 - 2¹¹ = 212012232373 is a prime.

It is a super-3 number, since 3×212012234421³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212012234391 and 212012234400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012234429) 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, 508285 + ... + 826061.

It is an arithmetic number, because the mean of its divisors is an integer number (19027911084).

Almost surely, 2^212012234421 is an apocalyptic number.

It is an amenable number.

212012234421 is a deficient number, since it is larger than the sum of its proper divisors (92434342923).

212012234421 is a wasteful number, since it uses less digits than its factorization.

212012234421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334900.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212012234421 its reverse (124432210212), we get a palindrome (336444444633).

The spelling of 212012234421 in words is "two hundred twelve billion, twelve million, two hundred thirty-four thousand, four hundred twenty-one".