11212002012121 has 4 divisors (see below), whose sum is σ = 11802107381200. Its totient is φ = 10621896643044.

The previous prime is 11212002012067. The next prime is 11212002012139. The reversal of 11212002012121 is 12121020021211.

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.

It is a cyclic number.

It is not a de Polignac number, because 11212002012121 - 2⁷ = 11212002011993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212002012095 and 11212002012104.

It is not an unprimeable number, because it can be changed into a prime (11212002018121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295052684511 + ... + 295052684548.

It is an arithmetic number, because the mean of its divisors is an integer number (2950526845300).

Almost surely, 2^{11212002012121} is an apocalyptic number.

It is an amenable number.

11212002012121 is a deficient number, since it is larger than the sum of its proper divisors (590105369079).

11212002012121 is an equidigital number, since it uses as much as digits as its factorization.

11212002012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590105369078.

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

Adding to 11212002012121 its reverse (12121020021211), we get a palindrome (23333022033332).

The spelling of 11212002012121 in words is "eleven trillion, two hundred twelve billion, two million, twelve thousand, one hundred twenty-one".