1031212022111 has 2 divisors, whose sum is σ = 1031212022112. Its totient is φ = 1031212022110.

The previous prime is 1031212022089. The next prime is 1031212022149. The reversal of 1031212022111 is 1112202121301.

It is a happy number.

1031212022111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031212022111 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031212022111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031212082111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515606011055 + 515606011056.

It is an arithmetic number, because the mean of its divisors is an integer number (515606011056).

Almost surely, 2^{1031212022111} is an apocalyptic number.

1031212022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031212022111 is an equidigital number, since it uses as much as digits as its factorization.

1031212022111 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 1031212022111 its reverse (1112202121301), we get a palindrome (2143414143412).

The spelling of 1031212022111 in words is "one trillion, thirty-one billion, two hundred twelve million, twenty-two thousand, one hundred eleven".