1213054445253 has 16 divisors (see below), whose sum is σ = 1848547362816. Its totient is φ = 693142676400.

The previous prime is 1213054445231. The next prime is 1213054445287. The reversal of 1213054445253 is 3525444503121.

It is not a de Polignac number, because 1213054445253 - 2¹⁰ = 1213054444229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213054445153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823473 + ... + 1761878.

It is an arithmetic number, because the mean of its divisors is an integer number (115534210176).

Almost surely, 2^{1213054445253} is an apocalyptic number.

It is an amenable number.

1213054445253 is a deficient number, since it is larger than the sum of its proper divisors (635492917563).

1213054445253 is a wasteful number, since it uses less digits than its factorization.

1213054445253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607704.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 1213054445253 its reverse (3525444503121), we get a palindrome (4738498948374).

The spelling of 1213054445253 in words is "one trillion, two hundred thirteen billion, fifty-four million, four hundred forty-five thousand, two hundred fifty-three".