11012002021121 has 12 divisors (see below), whose sum is σ = 11314047648768. Its totient is φ = 10713165680232.

The previous prime is 11012002021103. The next prime is 11012002021123. The reversal of 11012002021121 is 12112020021011.

It is not a de Polignac number, because 11012002021121 - 2¹⁸ = 11012001758977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012002021096 and 11012002021105.

It is not an unprimeable number, because it can be changed into a prime (11012002021123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2889761 + ... + 5511326.

It is an arithmetic number, because the mean of its divisors is an integer number (942837304064).

Almost surely, 2^{11012002021121} is an apocalyptic number.

It is an amenable number.

11012002021121 is a deficient number, since it is larger than the sum of its proper divisors (302045627647).

11012002021121 is an frugal number, since it uses more digits than its factorization.

11012002021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8401468 (or 8401301 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11012002021121 its reverse (12112020021011), we get a palindrome (23124022042132).

The spelling of 11012002021121 in words is "eleven trillion, twelve billion, two million, twenty-one thousand, one hundred twenty-one".