21201011002 has 8 divisors (see below), whose sum is σ = 31845262176. Its totient is φ = 10585923612.

The previous prime is 21201010991. The next prime is 21201011003. The reversal of 21201011002 is 20011010212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21201011002.

It is not an unprimeable number, because it can be changed into a prime (21201011003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289128 + ... + 7292035.

It is an arithmetic number, because the mean of its divisors is an integer number (3980657772).

Almost surely, 2^21201011002 is an apocalyptic number.

21201011002 is a deficient number, since it is larger than the sum of its proper divisors (10644251174).

21201011002 is a wasteful number, since it uses less digits than its factorization.

21201011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14581892.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21201011002 its reverse (20011010212), we get a palindrome (41212021214).

The spelling of 21201011002 in words is "twenty-one billion, two hundred one million, eleven thousand, two".