1205223153011 has 8 divisors (see below), whose sum is σ = 1205657757360. Its totient is φ = 1204788631968.

The previous prime is 1205223153007. The next prime is 1205223153091. The reversal of 1205223153011 is 1103513225021.

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

It is a cyclic number.

It is not a de Polignac number, because 1205223153011 - 2² = 1205223153007 is a prime.

It is a super-2 number, since 2×1205223153011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205223153091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43977365 + ... + 44004761.

It is an arithmetic number, because the mean of its divisors is an integer number (150707219670).

Almost surely, 2^{1205223153011} is an apocalyptic number.

1205223153011 is a deficient number, since it is larger than the sum of its proper divisors (434604349).

1205223153011 is an equidigital number, since it uses as much as digits as its factorization.

1205223153011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41653.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1205223153011 its reverse (1103513225021), we get a palindrome (2308736378032).

The spelling of 1205223153011 in words is "one trillion, two hundred five billion, two hundred twenty-three million, one hundred fifty-three thousand, eleven".