21443102 has 8 divisors (see below), whose sum is σ = 32305800. Its totient is φ = 10674504.

The previous prime is 21443099. The next prime is 21443119. The reversal of 21443102 is 20134412.

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, 22952 + ... + 23867.

It is an arithmetic number, because the mean of its divisors is an integer number (4038225).

Almost surely, 2^21443102 is an apocalyptic number.

21443102 is a deficient number, since it is larger than the sum of its proper divisors (10862698).

21443102 is a wasteful number, since it uses less digits than its factorization.

21443102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47050.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 21443102 is about 4630.6697139831. The cubic root of 21443102 is about 277.8193795943.

Adding to 21443102 its reverse (20134412), we get a palindrome (41577514).

It can be divided in two parts, 21443 and 102, that multiplied together give a triangular number (2187186 = T₂₀₉₁).

The spelling of 21443102 in words is "twenty-one million, four hundred forty-three thousand, one hundred two".