11220202112021 has 4 divisors (see below), whose sum is σ = 12823088128032. Its totient is φ = 9617316096012.

The previous prime is 11220202111949. The next prime is 11220202112023. The reversal of 11220202112021 is 12021120202211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220202112021 - 2⁴² = 6822155600917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220202112023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801443007995 + ... + 801443008008.

It is an arithmetic number, because the mean of its divisors is an integer number (3205772032008).

Almost surely, 2^{11220202112021} is an apocalyptic number.

It is an amenable number.

11220202112021 is a deficient number, since it is larger than the sum of its proper divisors (1602886016011).

11220202112021 is an equidigital number, since it uses as much as digits as its factorization.

11220202112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602886016010.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11220202112021 its reverse (12021120202211), we get a palindrome (23241322314232).

The spelling of 11220202112021 in words is "eleven trillion, two hundred twenty billion, two hundred two million, one hundred twelve thousand, twenty-one".