1142211001 has 2 divisors, whose sum is σ = 1142211002. Its totient is φ = 1142211000.

The previous prime is 1142210989. The next prime is 1142211019. The reversal of 1142211001 is 1001122411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730080400 + 412130601 = 27020^2 + 20301^2 .

It is an emirp because it is prime and its reverse (1001122411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142211001 - 2¹¹ = 1142208953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142211041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571105500 + 571105501.

It is an arithmetic number, because the mean of its divisors is an integer number (571105501).

Almost surely, 2^1142211001 is an apocalyptic number.

It is an amenable number.

1142211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142211001 is an equidigital number, since it uses as much as digits as its factorization.

1142211001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1142211001 is about 33796.6122710546. The cubic root of 1142211001 is about 1045.3188441225.

Adding to 1142211001 its reverse (1001122411), we get a palindrome (2143333412).

The spelling of 1142211001 in words is "one billion, one hundred forty-two million, two hundred eleven thousand, one".