1200111222031 has 2 divisors, whose sum is σ = 1200111222032. Its totient is φ = 1200111222030.

The previous prime is 1200111222001. The next prime is 1200111222041. The reversal of 1200111222031 is 1302221110021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200111222031 - 2¹³ = 1200111213839 is a prime.

It is a super-2 number, since 2×1200111222031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200111221996 and 1200111222014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200111222001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055611015 + 600055611016.

It is an arithmetic number, because the mean of its divisors is an integer number (600055611016).

Almost surely, 2^{1200111222031} is an apocalyptic number.

1200111222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111222031 is an equidigital number, since it uses as much as digits as its factorization.

1200111222031 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 16.

Adding to 1200111222031 its reverse (1302221110021), we get a palindrome (2502332332052).

The spelling of 1200111222031 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twenty-two thousand, thirty-one".