1223040015101 has 4 divisors (see below), whose sum is σ = 1231248337500. Its totient is φ = 1214831692704.

The previous prime is 1223040015089. The next prime is 1223040015163. The reversal of 1223040015101 is 1015100403221.

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 757744135225 + 465295879876 = 870485^2 + 682126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223040015101 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 (1223040015601) 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, 4104160976 + ... + 4104161273.

It is an arithmetic number, because the mean of its divisors is an integer number (307812084375).

Almost surely, 2^{1223040015101} is an apocalyptic number.

It is an amenable number.

1223040015101 is a deficient number, since it is larger than the sum of its proper divisors (8208322399).

1223040015101 is an equidigital number, since it uses as much as digits as its factorization.

1223040015101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208322398.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1223040015101 its reverse (1015100403221), we get a palindrome (2238140418322).

The spelling of 1223040015101 in words is "one trillion, two hundred twenty-three billion, forty million, fifteen thousand, one hundred one".