11202120021 has 8 divisors (see below), whose sum is σ = 15025598784. Its totient is φ = 7423360640.

The previous prime is 11202119993. The next prime is 11202120049. The reversal of 11202120021 is 12002120211.

It is an interprime number because it is at equal distance from previous prime (11202119993) and next prime (11202120049).

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 11202120021 - 2⁵ = 11202119989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202119979 and 11202120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202120421) 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, 11179260 + ... + 11180261.

It is an arithmetic number, because the mean of its divisors is an integer number (1878199848).

Almost surely, 2^11202120021 is an apocalyptic number.

It is an amenable number.

11202120021 is a deficient number, since it is larger than the sum of its proper divisors (3823478763).

11202120021 is a wasteful number, since it uses less digits than its factorization.

11202120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22359691.

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

Adding to 11202120021 its reverse (12002120211), we get a palindrome (23204240232).

The spelling of 11202120021 in words is "eleven billion, two hundred two million, one hundred twenty thousand, twenty-one".