21208814150 has 24 divisors (see below), whose sum is σ = 40410554184. Its totient is φ = 8276609600.

The previous prime is 21208814149. The next prime is 21208814171. The reversal of 21208814150 is 5141880212.

21208814150 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5170832 + ... + 5174931.

It is an arithmetic number, because the mean of its divisors is an integer number (1683773091).

Almost surely, 2^21208814150 is an apocalyptic number.

21208814150 is a deficient number, since it is larger than the sum of its proper divisors (19201740034).

21208814150 is a wasteful number, since it uses less digits than its factorization.

21208814150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10345816 (or 10345811 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The spelling of 21208814150 in words is "twenty-one billion, two hundred eight million, eight hundred fourteen thousand, one hundred fifty".