21001103002 has 8 divisors (see below), whose sum is σ = 34365441312. Its totient is φ = 9545955900.

The previous prime is 21001102987. The next prime is 21001103027. The reversal of 21001103002 is 20030110012.

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

It is a super-2 number, since 2×21001103002² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21001103002.

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, 477297774 + ... + 477297817.

It is an arithmetic number, because the mean of its divisors is an integer number (4295680164).

Almost surely, 2^21001103002 is an apocalyptic number.

21001103002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21001103002 is a deficient number, since it is larger than the sum of its proper divisors (13364338310).

21001103002 is a wasteful number, since it uses less digits than its factorization.

21001103002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954595604.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21001103002 its reverse (20030110012), we get a palindrome (41031213014).

The spelling of 21001103002 in words is "twenty-one billion, one million, one hundred three thousand, two".