11122212021 has 8 divisors (see below), whose sum is σ = 15109420320. Its totient is φ = 7274905872.

The previous prime is 11122211993. The next prime is 11122212043. The reversal of 11122212021 is 12021222111.

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

It is not a de Polignac number, because 11122212021 - 2⁶ = 11122211957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122212061) 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, 34975351 + ... + 34975668.

It is an arithmetic number, because the mean of its divisors is an integer number (1888677540).

Almost surely, 2^11122212021 is an apocalyptic number.

It is an amenable number.

11122212021 is a deficient number, since it is larger than the sum of its proper divisors (3987208299).

11122212021 is an equidigital number, since it uses as much as digits as its factorization.

11122212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69951075.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11122212021 its reverse (12021222111), we get a palindrome (23143434132).

The spelling of 11122212021 in words is "eleven billion, one hundred twenty-two million, two hundred twelve thousand, twenty-one".