21424555542412 has 12 divisors (see below), whose sum is σ = 40901424217416. Its totient is φ = 9738434337440.

The previous prime is 21424555542407. The next prime is 21424555542469.

21424555542412 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243460858393 + ... + 243460858480.

It is an arithmetic number, because the mean of its divisors is an integer number (3408452018118).

Almost surely, 2^{21424555542412} is an apocalyptic number.

21424555542412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21424555542412 is a deficient number, since it is larger than the sum of its proper divisors (19476868675004).

21424555542412 is a wasteful number, since it uses less digits than its factorization.

21424555542412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486921716888 (or 486921716886 counting only the distinct ones).

The product of its digits is 2560000, while the sum is 46.

It can be divided in two parts, 2142455 and 5542412, that added together give a palindrome (7684867).

The spelling of 21424555542412 in words is "twenty-one trillion, four hundred twenty-four billion, five hundred fifty-five million, five hundred forty-two thousand, four hundred twelve".