11202120021611 has 2 divisors, whose sum is σ = 11202120021612. Its totient is φ = 11202120021610.

The previous prime is 11202120021607. The next prime is 11202120021623. The reversal of 11202120021611 is 11612002120211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11202120021611 - 2² = 11202120021607 is a prime.

It is a super-2 number, since 2×11202120021611² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11202120027611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601060010805 + 5601060010806.

It is an arithmetic number, because the mean of its divisors is an integer number (5601060010806).

Almost surely, 2^{11202120021611} is an apocalyptic number.

11202120021611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202120021611 is an equidigital number, since it uses as much as digits as its factorization.

11202120021611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11202120021611 its reverse (11612002120211), we get a palindrome (22814122141822).

The spelling of 11202120021611 in words is "eleven trillion, two hundred two billion, one hundred twenty million, twenty-one thousand, six hundred eleven".