21554011130 has 32 divisors (see below), whose sum is σ = 39130827840. Its totient is φ = 8547759360.

The previous prime is 21554011109. The next prime is 21554011159. The reversal of 21554011130 is 3111045512.

It is a junction number, because it is equal to n+sod(n) for n = 21554011096 and 21554011105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585365 + ... + 621095.

It is an arithmetic number, because the mean of its divisors is an integer number (1222838370).

Almost surely, 2^21554011130 is an apocalyptic number.

21554011130 is a deficient number, since it is larger than the sum of its proper divisors (17576816710).

21554011130 is a wasteful number, since it uses less digits than its factorization.

21554011130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36254.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 21554011130 its reverse (3111045512), we get a palindrome (24665056642).

The spelling of 21554011130 in words is "twenty-one billion, five hundred fifty-four million, eleven thousand, one hundred thirty".