11101222020021 has 24 divisors (see below), whose sum is σ = 18124444118880. Its totient is φ = 6009684099552.

The previous prime is 11101222019981. The next prime is 11101222020029. The reversal of 11101222020021 is 12002022210111.

It is not a de Polignac number, because 11101222020021 - 2⁹ = 11101222019509 is a prime.

It is a super-3 number, since 3×11101222020021³ (a number of 40 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101222020029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1987326606 + ... + 1987332191.

It is an arithmetic number, because the mean of its divisors is an integer number (755185171620).

Almost surely, 2^{11101222020021} is an apocalyptic number.

It is an amenable number.

11101222020021 is a deficient number, since it is larger than the sum of its proper divisors (7023222098859).

11101222020021 is a wasteful number, since it uses less digits than its factorization.

11101222020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974658833 (or 3974658826 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11101222020021 its reverse (12002022210111), we get a palindrome (23103244230132).

The spelling of 11101222020021 in words is "eleven trillion, one hundred one billion, two hundred twenty-two million, twenty thousand, twenty-one".