1201102213123 has 4 divisors (see below), whose sum is σ = 1201105257408. Its totient is φ = 1201099168840.

The previous prime is 1201102213099. The next prime is 1201102213147. The reversal of 1201102213123 is 3213122011021.

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

It is an interprime number because it is at equal distance from previous prime (1201102213099) and next prime (1201102213147).

It is a cyclic number.

It is not a de Polignac number, because 1201102213123 - 2³⁷ = 1063663259651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201102213123.

It is not an unprimeable number, because it can be changed into a prime (1201102213523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823411 + ... + 1755052.

It is an arithmetic number, because the mean of its divisors is an integer number (300276314352).

Almost surely, 2^{1201102213123} is an apocalyptic number.

1201102213123 is a deficient number, since it is larger than the sum of its proper divisors (3044285).

1201102213123 is an equidigital number, since it uses as much as digits as its factorization.

1201102213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044284.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1201102213123 its reverse (3213122011021), we get a palindrome (4414224224144).

The spelling of 1201102213123 in words is "one trillion, two hundred one billion, one hundred two million, two hundred thirteen thousand, one hundred twenty-three".