1121002121971 has 2 divisors, whose sum is σ = 1121002121972. Its totient is φ = 1121002121970.

The previous prime is 1121002121881. The next prime is 1121002122001. The reversal of 1121002121971 is 1791212001211.

It is a strong prime.

It is an emirp because it is prime and its reverse (1791212001211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121002121971 - 2¹⁵ = 1121002089203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121002121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560501060985 + 560501060986.

It is an arithmetic number, because the mean of its divisors is an integer number (560501060986).

Almost surely, 2^{1121002121971} is an apocalyptic number.

1121002121971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121002121971 is an equidigital number, since it uses as much as digits as its factorization.

1121002121971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 1121002121971 in words is "one trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, nine hundred seventy-one".