21928711210 has 16 divisors (see below), whose sum is σ = 45110491776. Its totient is φ = 7518415248.

The previous prime is 21928711201. The next prime is 21928711219. The reversal of 21928711210 is 1211782912.

It is an interprime number because it is at equal distance from previous prime (21928711201) and next prime (21928711219).

It is not an unprimeable number, because it can be changed into a prime (21928711219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156633582 + ... + 156633721.

It is an arithmetic number, because the mean of its divisors is an integer number (2819405736).

Almost surely, 2^21928711210 is an apocalyptic number.

21928711210 is an abundant number, since it is smaller than the sum of its proper divisors (23181780566).

21928711210 is a wasteful number, since it uses less digits than its factorization.

21928711210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313267317.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 21928711210 in words is "twenty-one billion, nine hundred twenty-eight million, seven hundred eleven thousand, two hundred ten".