21115333014620 has 48 divisors (see below), whose sum is σ = 47756893810080. Its totient is φ = 7795817415936.

The previous prime is 21115333014613. The next prime is 21115333014641. The reversal of 21115333014620 is 2641033351112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124574 + ... + 6499706.

It is an arithmetic number, because the mean of its divisors is an integer number (994935287710).

Almost surely, 2^{21115333014620} is an apocalyptic number.

21115333014620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21115333014620 is an abundant number, since it is smaller than the sum of its proper divisors (26641560795460).

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

21115333014620 is a wasteful number, since it uses less digits than its factorization.

21115333014620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387894 (or 6387892 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 21115333014620 its reverse (2641033351112), we get a palindrome (23756366365732).

The spelling of 21115333014620 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-three million, fourteen thousand, six hundred twenty".