1012212201971 has 2 divisors, whose sum is σ = 1012212201972. Its totient is φ = 1012212201970.

The previous prime is 1012212201937. The next prime is 1012212202019. The reversal of 1012212201971 is 1791022122101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012212201971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012212207971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506106100985 + 506106100986.

It is an arithmetic number, because the mean of its divisors is an integer number (506106100986).

Almost surely, 2^{1012212201971} is an apocalyptic number.

1012212201971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012212201971 is an equidigital number, since it uses as much as digits as its factorization.

1012212201971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 1012212201971 in words is "one trillion, twelve billion, two hundred twelve million, two hundred one thousand, nine hundred seventy-one".