1001200253947 has 2 divisors, whose sum is σ = 1001200253948. Its totient is φ = 1001200253946.

The previous prime is 1001200253939. The next prime is 1001200253953. The reversal of 1001200253947 is 7493520021001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001200253947 - 2³ = 1001200253939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001200253957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600126973 + 500600126974.

It is an arithmetic number, because the mean of its divisors is an integer number (500600126974).

Almost surely, 2^{1001200253947} is an apocalyptic number.

1001200253947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001200253947 is an equidigital number, since it uses as much as digits as its factorization.

1001200253947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 1001200253947 its reverse (7493520021001), we get a palindrome (8494720274948).

The spelling of 1001200253947 in words is "one trillion, one billion, two hundred million, two hundred fifty-three thousand, nine hundred forty-seven".