11212321042021 has 8 divisors (see below), whose sum is σ = 12231765885888. Its totient is φ = 10192900020000.

The previous prime is 11212321041973. The next prime is 11212321042031. The reversal of 11212321042021 is 12024012321211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212321042021 is a prime.

It is a super-2 number, since 2×11212321042021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212321041983 and 11212321042001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212321042031) 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, 4964145 + ... + 6860566.

It is an arithmetic number, because the mean of its divisors is an integer number (1528970735736).

Almost surely, 2^{11212321042021} is an apocalyptic number.

11212321042021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11212321042021 is a deficient number, since it is larger than the sum of its proper divisors (1019444843867).

11212321042021 is a wasteful number, since it uses less digits than its factorization.

11212321042021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11910923.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 11212321042021 its reverse (12024012321211), we get a palindrome (23236333363232).

The spelling of 11212321042021 in words is "eleven trillion, two hundred twelve billion, three hundred twenty-one million, forty-two thousand, twenty-one".