11003212130021 has 16 divisors (see below), whose sum is σ = 11095995800880. Its totient is φ = 10910907248640.

The previous prime is 11003212129991. The next prime is 11003212130023. The reversal of 11003212130021 is 12003121230011.

It can be written as a sum of positive squares in 8 ways, for example, as 1842819825025 + 9160392304996 = 1357505^2 + 3026614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003212130021 - 2³⁸ = 10728334223077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003212130023) 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, 62882765 + ... + 63057501.

It is an arithmetic number, because the mean of its divisors is an integer number (693499737555).

Almost surely, 2^{11003212130021} is an apocalyptic number.

It is an amenable number.

11003212130021 is a deficient number, since it is larger than the sum of its proper divisors (92783670859).

11003212130021 is a wasteful number, since it uses less digits than its factorization.

11003212130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176104.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11003212130021 its reverse (12003121230011), we get a palindrome (23006333360032).

The spelling of 11003212130021 in words is "eleven trillion, three billion, two hundred twelve million, one hundred thirty thousand, twenty-one".