20010450335421 has 32 divisors (see below), whose sum is σ = 33138925093120. Its totient is φ = 10458128277504.

The previous prime is 20010450335417. The next prime is 20010450335531. The reversal of 20010450335421 is 12453305401002.

It is not a de Polignac number, because 20010450335421 - 2² = 20010450335417 is a prime.

It is a super-2 number, since 2×20010450335421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010450335401) 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 31 ways as a sum of consecutive naturals, for example, 336201220 + ... + 336260733.

It is an arithmetic number, because the mean of its divisors is an integer number (1035591409160).

Almost surely, 2^{20010450335421} is an apocalyptic number.

20010450335421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20010450335421 is a deficient number, since it is larger than the sum of its proper divisors (13128474757699).

20010450335421 is a wasteful number, since it uses less digits than its factorization.

20010450335421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672462085.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20010450335421 its reverse (12453305401002), we get a palindrome (32463755736423).

The spelling of 20010450335421 in words is "twenty trillion, ten billion, four hundred fifty million, three hundred thirty-five thousand, four hundred twenty-one".