21011012211003 has 8 divisors (see below), whose sum is σ = 28094044657488. Its totient is φ = 13967660619264.

The previous prime is 21011012210957. The next prime is 21011012211029. The reversal of 21011012211003 is 30011221011012.

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

It is not a de Polignac number, because 21011012211003 - 2¹² = 21011012206907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21011012211503) 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, 9920212450 + ... + 9920214567.

It is an arithmetic number, because the mean of its divisors is an integer number (3511755582186).

Almost surely, 2^{21011012211003} is an apocalyptic number.

21011012211003 is a deficient number, since it is larger than the sum of its proper divisors (7083032446485).

21011012211003 is a wasteful number, since it uses less digits than its factorization.

21011012211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19840427373.

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

Adding to 21011012211003 its reverse (30011221011012), we get a palindrome (51022233222015).

The spelling of 21011012211003 in words is "twenty-one trillion, eleven billion, twelve million, two hundred eleven thousand, three".