21010103002 has 16 divisors (see below), whose sum is σ = 36063103680. Its totient is φ = 8992883808.

The previous prime is 21010102973. The next prime is 21010103003. The reversal of 21010103002 is 20030101012.

It is a self number, because there is not a number n which added to its sum of digits gives 21010103002.

It is not an unprimeable number, because it can be changed into a prime (21010103003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942427 + ... + 964462.

It is an arithmetic number, because the mean of its divisors is an integer number (2253943980).

Almost surely, 2^21010103002 is an apocalyptic number.

21010103002 is a deficient number, since it is larger than the sum of its proper divisors (15053000678).

21010103002 is a wasteful number, since it uses less digits than its factorization.

21010103002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907685.

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

Adding to 21010103002 its reverse (20030101012), we get a palindrome (41040204014).

It can be divided in two parts, 2101010 and 3002, that added together give a palindrome (2104012).

The spelling of 21010103002 in words is "twenty-one billion, ten million, one hundred three thousand, two".