21113000340 has 48 divisors (see below), whose sum is σ = 59133618432. Its totient is φ = 5628493696.

The previous prime is 21113000323. The next prime is 21113000357. The reversal of 21113000340 is 4300031112.

It is an interprime number because it is at equal distance from previous prime (21113000323) and next prime (21113000357).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163957 + ... + 262883.

It is an arithmetic number, because the mean of its divisors is an integer number (1231950384).

Almost surely, 2^21113000340 is an apocalyptic number.

21113000340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113000340 is an abundant number, since it is smaller than the sum of its proper divisors (38020618092).

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

21113000340 is a wasteful number, since it uses less digits than its factorization.

21113000340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102496 (or 102494 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21113000340 its reverse (4300031112), we get a palindrome (25413031452).

The spelling of 21113000340 in words is "twenty-one billion, one hundred thirteen million, three hundred forty", and thus it is an aban number.