1101234021253 has 4 divisors (see below), whose sum is σ = 1122012021708. Its totient is φ = 1080456020800.

The previous prime is 1101234021233. The next prime is 1101234021353. The reversal of 1101234021253 is 3521204321011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 756122419809 + 345111601444 = 869553^2 + 587462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101234021253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101234021233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10389000148 + ... + 10389000253.

It is an arithmetic number, because the mean of its divisors is an integer number (280503005427).

Almost surely, 2^{1101234021253} is an apocalyptic number.

It is an amenable number.

1101234021253 is a deficient number, since it is larger than the sum of its proper divisors (20778000455).

1101234021253 is an equidigital number, since it uses as much as digits as its factorization.

1101234021253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20778000454.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1101234021253 its reverse (3521204321011), we get a palindrome (4622438342264).

The spelling of 1101234021253 in words is "one trillion, one hundred one billion, two hundred thirty-four million, twenty-one thousand, two hundred fifty-three".