21002201012103 has 16 divisors (see below), whose sum is σ = 29482978060800. Its totient is φ = 13261755888000.

The previous prime is 21002201012063. The next prime is 21002201012119. The reversal of 21002201012103 is 30121010220012.

It is not a de Polignac number, because 21002201012103 - 2⁴⁴ = 3410014967687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002201012123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38506258 + ... + 39047871.

It is an arithmetic number, because the mean of its divisors is an integer number (1842686128800).

Almost surely, 2^{21002201012103} is an apocalyptic number.

21002201012103 is a deficient number, since it is larger than the sum of its proper divisors (8480777048697).

21002201012103 is a wasteful number, since it uses less digits than its factorization.

21002201012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77558902.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21002201012103 its reverse (30121010220012), we get a palindrome (51123211232115).

The spelling of 21002201012103 in words is "twenty-one trillion, two billion, two hundred one million, twelve thousand, one hundred three".