11200020111031 has 2 divisors, whose sum is σ = 11200020111032. Its totient is φ = 11200020111030.

The previous prime is 11200020111019. The next prime is 11200020111041. The reversal of 11200020111031 is 13011102000211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11200020111031 - 2¹⁵ = 11200020078263 is a prime.

It is a super-2 number, since 2×11200020111031² (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 (11200020111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600010055515 + 5600010055516.

It is an arithmetic number, because the mean of its divisors is an integer number (5600010055516).

Almost surely, 2^{11200020111031} is an apocalyptic number.

11200020111031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200020111031 is an equidigital number, since it uses as much as digits as its factorization.

11200020111031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11200020111031 its reverse (13011102000211), we get a palindrome (24211122111242).

The spelling of 11200020111031 in words is "eleven trillion, two hundred billion, twenty million, one hundred eleven thousand, thirty-one".