1235223223541 has 4 divisors (see below), whose sum is σ = 1236846382284. Its totient is φ = 1233600064800.

The previous prime is 1235223223537. The next prime is 1235223223573. The reversal of 1235223223541 is 1453223225321.

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 176186704516 + 1059036519025 = 419746^2 + 1029095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235223223541 - 2² = 1235223223537 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 (1235223223141) 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, 811578230 + ... + 811579751.

It is an arithmetic number, because the mean of its divisors is an integer number (309211595571).

Almost surely, 2^{1235223223541} is an apocalyptic number.

It is an amenable number.

1235223223541 is a deficient number, since it is larger than the sum of its proper divisors (1623158743).

1235223223541 is an equidigital number, since it uses as much as digits as its factorization.

1235223223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623158742.

The product of its digits is 86400, while the sum is 35.

Adding to 1235223223541 its reverse (1453223225321), we get a palindrome (2688446448862).

The spelling of 1235223223541 in words is "one trillion, two hundred thirty-five billion, two hundred twenty-three million, two hundred twenty-three thousand, five hundred forty-one".