1001211209983 has 2 divisors, whose sum is σ = 1001211209984. Its totient is φ = 1001211209982.

The previous prime is 1001211209951. The next prime is 1001211210053. The reversal of 1001211209983 is 3899021121001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001211209983 - 2⁵ = 1001211209951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001211209183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605604991 + 500605604992.

It is an arithmetic number, because the mean of its divisors is an integer number (500605604992).

Almost surely, 2^{1001211209983} is an apocalyptic number.

1001211209983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001211209983 is an equidigital number, since it uses as much as digits as its factorization.

1001211209983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 37.

It can be divided in two parts, 100121120998 and 3, that added together give a palindrome (100121121001).

The spelling of 1001211209983 in words is "one trillion, one billion, two hundred eleven million, two hundred nine thousand, nine hundred eighty-three".