21541112130 has 32 divisors (see below), whose sum is σ = 53481384000. Its totient is φ = 5546217152.

The previous prime is 21541112119. The next prime is 21541112147. The reversal of 21541112130 is 3121114512.

It is a junction number, because it is equal to n+sod(n) for n = 21541112097 and 21541112106.

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, 12379080 + ... + 12380819.

It is an arithmetic number, because the mean of its divisors is an integer number (1671293250).

Almost surely, 2^21541112130 is an apocalyptic number.

21541112130 is an abundant number, since it is smaller than the sum of its proper divisors (31940271870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21541112130 is a wasteful number, since it uses less digits than its factorization.

21541112130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24759938.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 21541112130 its reverse (3121114512), we get a palindrome (24662226642).

The spelling of 21541112130 in words is "twenty-one billion, five hundred forty-one million, one hundred twelve thousand, one hundred thirty".