11010121220021 has 96 divisors (see below), whose sum is σ = 15021835150464. Its totient is φ = 7950362112000.

The previous prime is 11010121220011. The next prime is 11010121220023. The reversal of 11010121220021 is 12002212101011.

It is not a de Polignac number, because 11010121220021 - 2⁶ = 11010121219957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11010121219978 and 11010121220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010121220023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2382625091 + ... + 2382629711.

It is an arithmetic number, because the mean of its divisors is an integer number (156477449484).

Almost surely, 2^{11010121220021} is an apocalyptic number.

11010121220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11010121220021 is a deficient number, since it is larger than the sum of its proper divisors (4011713930443).

11010121220021 is a wasteful number, since it uses less digits than its factorization.

11010121220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611 (or 8604 counting only the distinct ones).

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

Adding to 11010121220021 its reverse (12002212101011), we get a palindrome (23012333321032).

The spelling of 11010121220021 in words is "eleven trillion, ten billion, one hundred twenty-one million, two hundred twenty thousand, twenty-one".