21001103031202 has 16 divisors (see below), whose sum is σ = 36002976134400. Its totient is φ = 9000201421728.

The previous prime is 21001103031193. The next prime is 21001103031203. The reversal of 21001103031202 is 20213030110012.

It is not an unprimeable number, because it can be changed into a prime (21001103031203) 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, 22127443 + ... + 23057014.

It is an arithmetic number, because the mean of its divisors is an integer number (2250186008400).

Almost surely, 2^{21001103031202} is an apocalyptic number.

21001103031202 is a deficient number, since it is larger than the sum of its proper divisors (15001873103198).

21001103031202 is a wasteful number, since it uses less digits than its factorization.

21001103031202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45217665.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21001103031202 its reverse (20213030110012), we get a palindrome (41214133141214).

The spelling of 21001103031202 in words is "twenty-one trillion, one billion, one hundred three million, thirty-one thousand, two hundred two".