21150401234204 has 48 divisors (see below), whose sum is σ = 40449685651200. Its totient is φ = 9596775027840.

The previous prime is 21150401234203. The next prime is 21150401234231. The reversal of 21150401234204 is 40243210405112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150401234203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56261447 + ... + 56636129.

It is an arithmetic number, because the mean of its divisors is an integer number (842701784400).

Almost surely, 2^{21150401234204} is an apocalyptic number.

It is an amenable number.

21150401234204 is a deficient number, since it is larger than the sum of its proper divisors (19299284416996).

21150401234204 is a wasteful number, since it uses less digits than its factorization.

21150401234204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376970 (or 376968 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 21150401234204 its reverse (40243210405112), we get a palindrome (61393611639316).

The spelling of 21150401234204 in words is "twenty-one trillion, one hundred fifty billion, four hundred one million, two hundred thirty-four thousand, two hundred four".