1253002121101 has 2 divisors, whose sum is σ = 1253002121102. Its totient is φ = 1253002121100.

The previous prime is 1253002121087. The next prime is 1253002121123. The reversal of 1253002121101 is 1011212003521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635990300100 + 617011821001 = 797490^2 + 785501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253002121101 - 2⁷ = 1253002120973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253002121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626501060550 + 626501060551.

It is an arithmetic number, because the mean of its divisors is an integer number (626501060551).

Almost surely, 2^{1253002121101} is an apocalyptic number.

It is an amenable number.

1253002121101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253002121101 is an equidigital number, since it uses as much as digits as its factorization.

1253002121101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 1253002121101 its reverse (1011212003521), we get a palindrome (2264214124622).

The spelling of 1253002121101 in words is "one trillion, two hundred fifty-three billion, two million, one hundred twenty-one thousand, one hundred one".