21113303554546 has 32 divisors (see below), whose sum is σ = 36297925034112. Its totient is φ = 9022670766720.

The previous prime is 21113303554451. The next prime is 21113303554573. The reversal of 21113303554546 is 64545530331112.

It is a super-2 number, since 2×21113303554546² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5861941 + ... + 8751511.

It is an arithmetic number, because the mean of its divisors is an integer number (1134310157316).

Almost surely, 2^{21113303554546} is an apocalyptic number.

21113303554546 is a deficient number, since it is larger than the sum of its proper divisors (15184621479566).

21113303554546 is a wasteful number, since it uses less digits than its factorization.

21113303554546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891074.

The product of its (nonzero) digits is 648000, while the sum is 43.

Adding to 21113303554546 its reverse (64545530331112), we get a palindrome (85658833885658).

The spelling of 21113303554546 in words is "twenty-one trillion, one hundred thirteen billion, three hundred three million, five hundred fifty-four thousand, five hundred forty-six".