21103342152 has 32 divisors (see below), whose sum is σ = 53545797600. Its totient is φ = 6929455104.

The previous prime is 21103342109. The next prime is 21103342159. The reversal of 21103342152 is 25124330112.

It is a super-2 number, since 2×21103342152² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21103342159) 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, 6560377 + ... + 6563592.

It is an arithmetic number, because the mean of its divisors is an integer number (1673306175).

Almost surely, 2^21103342152 is an apocalyptic number.

It is an amenable number.

21103342152 is an abundant number, since it is smaller than the sum of its proper divisors (32442455448).

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

21103342152 is a wasteful number, since it uses less digits than its factorization.

21103342152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13124045 (or 13124041 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21103342152 its reverse (25124330112), we get a palindrome (46227672264).

The spelling of 21103342152 in words is "twenty-one billion, one hundred three million, three hundred forty-two thousand, one hundred fifty-two".