1211302324153 has 4 divisors (see below), whose sum is σ = 1231832872080. Its totient is φ = 1190771776228.

The previous prime is 1211302324121. The next prime is 1211302324159. The reversal of 1211302324153 is 3514232031121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1211302324153 - 2⁵ = 1211302324121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211302324159) 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, 10265273875 + ... + 10265273992.

It is an arithmetic number, because the mean of its divisors is an integer number (307958218020).

Almost surely, 2^{1211302324153} is an apocalyptic number.

It is an amenable number.

1211302324153 is a deficient number, since it is larger than the sum of its proper divisors (20530547927).

1211302324153 is an equidigital number, since it uses as much as digits as its factorization.

1211302324153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20530547926.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1211302324153 its reverse (3514232031121), we get a palindrome (4725534355274).

The spelling of 1211302324153 in words is "one trillion, two hundred eleven billion, three hundred two million, three hundred twenty-four thousand, one hundred fifty-three".