21010240211304 has 16 divisors (see below), whose sum is σ = 52525600528320. Its totient is φ = 7003413403760.

The previous prime is 21010240211293. The next prime is 21010240211377. The reversal of 21010240211304 is 40311204201012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437713337712 + ... + 437713337759.

It is an arithmetic number, because the mean of its divisors is an integer number (3282850033020).

Almost surely, 2^{21010240211304} is an apocalyptic number.

21010240211304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21010240211304 is an abundant number, since it is smaller than the sum of its proper divisors (31515360317016).

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

21010240211304 is a wasteful number, since it uses less digits than its factorization.

21010240211304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875426675480 (or 875426675476 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21010240211304 its reverse (40311204201012), we get a palindrome (61321444412316).

The spelling of 21010240211304 in words is "twenty-one trillion, ten billion, two hundred forty million, two hundred eleven thousand, three hundred four".