21120241434 has 16 divisors (see below), whose sum is σ = 42241932480. Its totient is φ = 7039838880.

The previous prime is 21120241421. The next prime is 21120241459. The reversal of 21120241434 is 43414202112.

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, 258627 + ... + 330345.

It is an arithmetic number, because the mean of its divisors is an integer number (2640120780).

Almost surely, 2^21120241434 is an apocalyptic number.

21120241434 is an abundant number, since it is smaller than the sum of its proper divisors (21121691046).

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

21120241434 is a wasteful number, since it uses less digits than its factorization.

21120241434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120805.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21120241434 its reverse (43414202112), we get a palindrome (64534443546).

The spelling of 21120241434 in words is "twenty-one billion, one hundred twenty million, two hundred forty-one thousand, four hundred thirty-four".