11202111020231 has 2 divisors, whose sum is σ = 11202111020232. Its totient is φ = 11202111020230.

The previous prime is 11202111020197. The next prime is 11202111020257. The reversal of 11202111020231 is 13202011120211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202111020231 is a prime.

It is a super-2 number, since 2×11202111020231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11202111020131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601055510115 + 5601055510116.

It is an arithmetic number, because the mean of its divisors is an integer number (5601055510116).

Almost surely, 2^{11202111020231} is an apocalyptic number.

11202111020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202111020231 is an equidigital number, since it uses as much as digits as its factorization.

11202111020231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11202111020231 its reverse (13202011120211), we get a palindrome (24404122140442).

The spelling of 11202111020231 in words is "eleven trillion, two hundred two billion, one hundred eleven million, twenty thousand, two hundred thirty-one".