21160002 has 24 divisors (see below), whose sum is σ = 44959536. Its totient is φ = 6637888.

The previous prime is 21160001. The next prime is 21160003. The reversal of 21160002 is 20006112.

It is an interprime number because it is at equal distance from previous prime (21160001) and next prime (21160003).

It is a self number, because there is not a number n which added to its sum of digits gives 21160002.

It is not an unprimeable number, because it can be changed into a prime (21160001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4368 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (1873314).

Almost surely, 2^21160002 is an apocalyptic number.

21160002 is an abundant number, since it is smaller than the sum of its proper divisors (23799534).

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

21160002 is a wasteful number, since it uses less digits than its factorization.

21160002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12242 (or 12225 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21160002 is about 4600.0002173913. Note that the first 3 decimals coincide. The cubic root of 21160002 is about 276.5913334999.

Adding to 21160002 its reverse (20006112), we get a palindrome (41166114).

The spelling of 21160002 in words is "twenty-one million, one hundred sixty thousand, two".