21046466464012 has 18 divisors (see below), whose sum is σ = 40484008839764. Its totient is φ = 9566575665240.

The previous prime is 21046466463871. The next prime is 21046466464019.

21046466464012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21046466464012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21046466464019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21742216938 + ... + 21742217905.

Almost surely, 2^{21046466464012} is an apocalyptic number.

21046466464012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21046466464012 is a deficient number, since it is larger than the sum of its proper divisors (19437542375752).

21046466464012 is a wasteful number, since it uses less digits than its factorization.

21046466464012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43484434869 (or 43484434856 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

It can be divided in two parts, 2104646 and 6464012, that added together give a palindrome (8568658).

The spelling of 21046466464012 in words is "twenty-one trillion, forty-six billion, four hundred sixty-six million, four hundred sixty-four thousand, twelve".