11203212300021 has 12 divisors (see below), whose sum is σ = 18494191733472. Its totient is φ = 6401835599976.

The previous prime is 11203212299999. The next prime is 11203212300023. The reversal of 11203212300021 is 12000321230211.

11203212300021 is a `hidden beast` number, since 1 + 1 + 20 + 321 + 2 + 300 + 0 + 21 = 666.

It is not a de Polignac number, because 11203212300021 - 2¹¹ = 11203212297973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11203212299967 and 11203212300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203212300023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88914383271 + ... + 88914383396.

It is an arithmetic number, because the mean of its divisors is an integer number (1541182644456).

Almost surely, 2^{11203212300021} is an apocalyptic number.

It is an amenable number.

11203212300021 is a deficient number, since it is larger than the sum of its proper divisors (7290979433451).

11203212300021 is a wasteful number, since it uses less digits than its factorization.

11203212300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177828766680 (or 177828766677 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11203212300021 its reverse (12000321230211), we get a palindrome (23203533530232).

The spelling of 11203212300021 in words is "eleven trillion, two hundred three billion, two hundred twelve million, three hundred thousand, twenty-one".