21880102 has 8 divisors (see below), whose sum is σ = 32840496. Its totient is φ = 10933272.

The previous prime is 21880099. The next prime is 21880121. The reversal of 21880102 is 20108812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3228 + ... + 7360.

It is an arithmetic number, because the mean of its divisors is an integer number (4105062).

Almost surely, 2^21880102 is an apocalyptic number.

21880102 is a deficient number, since it is larger than the sum of its proper divisors (10960394).

21880102 is a wasteful number, since it uses less digits than its factorization.

21880102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 21880102 is about 4677.6171284106. The cubic root of 21880102 is about 279.6939768815.

Adding to 21880102 its reverse (20108812), we get a palindrome (41988914).

The spelling of 21880102 in words is "twenty-one million, eight hundred eighty thousand, one hundred two".