11011001021121 has 16 divisors (see below), whose sum is σ = 14940187927488. Its totient is φ = 7211533886400.

The previous prime is 11011001021101. The next prime is 11011001021131. The reversal of 11011001021121 is 12112010011011.

It is not a de Polignac number, because 11011001021121 - 2¹⁸ = 11011000758977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011001021097 and 11011001021106.

It is not an unprimeable number, because it can be changed into a prime (11011001021101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36493731 + ... + 36794216.

It is an arithmetic number, because the mean of its divisors is an integer number (933761745468).

Almost surely, 2^{11011001021121} is an apocalyptic number.

It is an amenable number.

11011001021121 is a deficient number, since it is larger than the sum of its proper divisors (3929186906367).

11011001021121 is an equidigital number, since it uses as much as digits as its factorization.

11011001021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73288832.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11011001021121 its reverse (12112010011011), we get a palindrome (23123011032132).

The spelling of 11011001021121 in words is "eleven trillion, eleven billion, one million, twenty-one thousand, one hundred twenty-one".