21041436002250 has 64 divisors (see below), whose sum is σ = 52984198141056. Its totient is φ = 5561394272000.

The previous prime is 21041436002161. The next prime is 21041436002309. The reversal of 21041436002250 is 5220063414012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124053516 + ... + 124223015.

It is an arithmetic number, because the mean of its divisors is an integer number (827878095954).

Almost surely, 2^{21041436002250} is an apocalyptic number.

21041436002250 is an abundant number, since it is smaller than the sum of its proper divisors (31942762138806).

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

21041436002250 is a wasteful number, since it uses less digits than its factorization.

21041436002250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248276664 (or 248276654 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 21041436002250 its reverse (5220063414012), we get a palindrome (26261499416262).

The spelling of 21041436002250 in words is "twenty-one trillion, forty-one billion, four hundred thirty-six million, two thousand, two hundred fifty".