1213102231001 has 4 divisors (see below), whose sum is σ = 1213248944100. Its totient is φ = 1212955517904.

The previous prime is 1213102230983. The next prime is 1213102231037. The reversal of 1213102231001 is 1001322013121.

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 708290560000 + 504811671001 = 841600^2 + 710501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213102231001 - 2²⁶ = 1213035122137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213102231091) 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, 73344146 + ... + 73360683.

It is an arithmetic number, because the mean of its divisors is an integer number (303312236025).

Almost surely, 2^{1213102231001} is an apocalyptic number.

It is an amenable number.

1213102231001 is a deficient number, since it is larger than the sum of its proper divisors (146713099).

1213102231001 is an equidigital number, since it uses as much as digits as its factorization.

1213102231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146713098.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1213102231001 its reverse (1001322013121), we get a palindrome (2214424244122).

The spelling of 1213102231001 in words is "one trillion, two hundred thirteen billion, one hundred two million, two hundred thirty-one thousand, one".