1021201225253 has 8 divisors (see below), whose sum is σ = 1179569329920. Its totient is φ = 873755058880.

The previous prime is 1021201225243. The next prime is 1021201225267. The reversal of 1021201225253 is 3525221021201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021201225253 - 2⁸ = 1021201224997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201225243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2730484373 + ... + 2730484746.

It is an arithmetic number, because the mean of its divisors is an integer number (147446166240).

Almost surely, 2^{1021201225253} is an apocalyptic number.

It is an amenable number.

1021201225253 is a deficient number, since it is larger than the sum of its proper divisors (158368104667).

1021201225253 is a wasteful number, since it uses less digits than its factorization.

1021201225253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460969147.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 1021201225253 its reverse (3525221021201), we get a palindrome (4546422246454).

The spelling of 1021201225253 in words is "one trillion, twenty-one billion, two hundred one million, two hundred twenty-five thousand, two hundred fifty-three".