21124545310 has 32 divisors (see below), whose sum is σ = 41507085312. Its totient is φ = 7676808480.

The previous prime is 21124545289. The next prime is 21124545311. The reversal of 21124545310 is 1354542112.

It is a super-2 number, since 2×21124545310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124545311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117019 + ... + 236521.

It is an arithmetic number, because the mean of its divisors is an integer number (1297096416).

Almost surely, 2^21124545310 is an apocalyptic number.

21124545310 is a deficient number, since it is larger than the sum of its proper divisors (20382540002).

21124545310 is a wasteful number, since it uses less digits than its factorization.

21124545310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121128.

The product of its (nonzero) digits is 4800, while the sum is 28.

It can be divided in two parts, 211 and 24545310, that added together give a triangular number (24545521 = T₇₀₀₆).

The spelling of 21124545310 in words is "twenty-one billion, one hundred twenty-four million, five hundred forty-five thousand, three hundred ten".