11215042121001 has 4 divisors (see below), whose sum is σ = 14953389494672. Its totient is φ = 7476694747332.

The previous prime is 11215042120999. The next prime is 11215042121011. The reversal of 11215042121001 is 10012124051211.

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 not a de Polignac number, because 11215042121001 - 2¹ = 11215042120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11215042121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869173686831 + ... + 1869173686836.

It is an arithmetic number, because the mean of its divisors is an integer number (3738347373668).

Almost surely, 2^{11215042121001} is an apocalyptic number.

It is an amenable number.

11215042121001 is a deficient number, since it is larger than the sum of its proper divisors (3738347373671).

11215042121001 is an equidigital number, since it uses as much as digits as its factorization.

11215042121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738347373670.

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 11215042121001 its reverse (10012124051211), we get a palindrome (21227166172212).

The spelling of 11215042121001 in words is "eleven trillion, two hundred fifteen billion, forty-two million, one hundred twenty-one thousand, one".