1001212221127 has 2 divisors, whose sum is σ = 1001212221128. Its totient is φ = 1001212221126.

The previous prime is 1001212221043. The next prime is 1001212221137. The reversal of 1001212221127 is 7211222121001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001212221127 - 2³¹ = 999064737479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001212221098 and 1001212221107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001212221137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500606110563 + 500606110564.

It is an arithmetic number, because the mean of its divisors is an integer number (500606110564).

Almost surely, 2^{1001212221127} is an apocalyptic number.

1001212221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001212221127 is an equidigital number, since it uses as much as digits as its factorization.

1001212221127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1001212221127 its reverse (7211222121001), we get a palindrome (8212434342128).

The spelling of 1001212221127 in words is "one trillion, one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twenty-seven".