21270752118 has 480 divisors, whose sum is σ = 63499189248. Its totient is φ = 5258131200.

The previous prime is 21270752101. The next prime is 21270752123. The reversal of 21270752118 is 81125707212.

21270752118 is a `hidden beast` number, since 2 + 127 + 0 + 7 + 521 + 1 + 8 = 666.

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 239 ways as a sum of consecutive naturals, for example, 291380130 + ... + 291380202.

Almost surely, 2^21270752118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21270752118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31749594624).

21270752118 is an abundant number, since it is smaller than the sum of its proper divisors (42228437130).

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

21270752118 is a wasteful number, since it uses less digits than its factorization.

21270752118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The spelling of 21270752118 in words is "twenty-one billion, two hundred seventy million, seven hundred fifty-two thousand, one hundred eighteen".