11202021021 has 8 divisors (see below), whose sum is σ = 15814617984. Its totient is φ = 7028719040.

The previous prime is 11202020927. The next prime is 11202021043. The reversal of 11202021021 is 12012020211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11202021021 - 2²¹ = 11199923869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202020988 and 11202021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202021421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109823685 + ... + 109823786.

It is an arithmetic number, because the mean of its divisors is an integer number (1976827248).

Almost surely, 2^11202021021 is an apocalyptic number.

It is an amenable number.

11202021021 is a deficient number, since it is larger than the sum of its proper divisors (4612596963).

11202021021 is a wasteful number, since it uses less digits than its factorization.

11202021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219647491.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11202021021 its reverse (12012020211), we get a palindrome (23214041232).

The spelling of 11202021021 in words is "eleven billion, two hundred two million, twenty-one thousand, twenty-one".