11212421101 has 4 divisors (see below), whose sum is σ = 12814195552. Its totient is φ = 9610646652.

The previous prime is 11212421081. The next prime is 11212421161. The reversal of 11212421101 is 10112421211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10112421211 = 2293 ⋅4410127.

It is a cyclic number.

It is not a de Polignac number, because 11212421101 - 2⁹ = 11212420589 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 (11212421161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800887215 + ... + 800887228.

It is an arithmetic number, because the mean of its divisors is an integer number (3203548888).

Almost surely, 2^11212421101 is an apocalyptic number.

It is an amenable number.

11212421101 is a deficient number, since it is larger than the sum of its proper divisors (1601774451).

11212421101 is an equidigital number, since it uses as much as digits as its factorization.

11212421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601774450.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11212421101 its reverse (10112421211), we get a palindrome (21324842312).

It can be divided in two parts, 112124 and 21101, that added together give a square (133225 = 365²).

The spelling of 11212421101 in words is "eleven billion, two hundred twelve million, four hundred twenty-one thousand, one hundred one".