21024104202 has 80 divisors (see below), whose sum is σ = 48201753600. Its totient is φ = 6846122592.

The previous prime is 21024104137. The next prime is 21024104209. The reversal of 21024104202 is 20240142012.

21024104202 is a `hidden beast` number, since 2 + 1 + 0 + 241 + 0 + 420 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21024104209) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4619424 + ... + 4623972.

It is an arithmetic number, because the mean of its divisors is an integer number (602521920).

Almost surely, 2^21024104202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21024104202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24100876800).

21024104202 is an abundant number, since it is smaller than the sum of its proper divisors (27177649398).

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

21024104202 is a wasteful number, since it uses less digits than its factorization.

21024104202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217 (or 5208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21024104202 its reverse (20240142012), we get a palindrome (41264246214).

The spelling of 21024104202 in words is "twenty-one billion, twenty-four million, one hundred four thousand, two hundred two".