21243411434212 has 24 divisors (see below), whose sum is σ = 40687706616480. Its totient is φ = 9624643018560.

The previous prime is 21243411434153. The next prime is 21243411434257.

21243411434212 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×21243411434212³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 786313537 + ... + 786340552.

It is an arithmetic number, because the mean of its divisors is an integer number (1695321109020).

Almost surely, 2^{21243411434212} is an apocalyptic number.

21243411434212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21243411434212 is a deficient number, since it is larger than the sum of its proper divisors (19444295182268).

21243411434212 is a wasteful number, since it uses less digits than its factorization.

21243411434212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572654411 (or 1572654409 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

It can be divided in two parts, 2124341 and 1434212, that added together give a palindrome (3558553).

The spelling of 21243411434212 in words is "twenty-one trillion, two hundred forty-three billion, four hundred eleven million, four hundred thirty-four thousand, two hundred twelve".