21112021011003 has 32 divisors (see below), whose sum is σ = 30803059262976. Its totient is φ = 12783167324928.

The previous prime is 21112021010999. The next prime is 21112021011043. The reversal of 21112021011003 is 30011012021112.

It is not a de Polignac number, because 21112021011003 - 2² = 21112021010999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112021011043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2474551 + ... + 6953232.

It is an arithmetic number, because the mean of its divisors is an integer number (962595601968).

Almost surely, 2^{21112021011003} is an apocalyptic number.

21112021011003 is a deficient number, since it is larger than the sum of its proper divisors (9691038251973).

21112021011003 is a wasteful number, since it uses less digits than its factorization.

21112021011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9428723.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21112021011003 its reverse (30011012021112), we get a palindrome (51123033032115).

The spelling of 21112021011003 in words is "twenty-one trillion, one hundred twelve billion, twenty-one million, eleven thousand, three".