21013054451030 has 16 divisors (see below), whose sum is σ = 37824096236400. Its totient is φ = 8405088841632.

The previous prime is 21013054451017. The next prime is 21013054451063. The reversal of 21013054451030 is 3015445031012.

It is a junction number, because it is equal to n+sod(n) for n = 21013054450984 and 21013054451002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15952205 + ... + 17219144.

It is an arithmetic number, because the mean of its divisors is an integer number (2364006014775).

Almost surely, 2^{21013054451030} is an apocalyptic number.

21013054451030 is a deficient number, since it is larger than the sum of its proper divisors (16811041785370).

21013054451030 is a wasteful number, since it uses less digits than its factorization.

21013054451030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33234703.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 21013054451030 its reverse (3015445031012), we get a palindrome (24028499482042).

The spelling of 21013054451030 in words is "twenty-one trillion, thirteen billion, fifty-four million, four hundred fifty-one thousand, thirty".