145122481213 has 6 divisors (see below), whose sum is σ = 153162508254. Its totient is φ = 137484455544.

The previous prime is 145122481201. The next prime is 145122481223. The reversal of 145122481213 is 312184221541.

It can be written as a sum of positive squares in only one way, i.e., 110783796964 + 34338684249 = 332842^2 + 185307^2 .

It is not a de Polignac number, because 145122481213 - 2¹⁷ = 145122350141 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 (145122481223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201000306 + ... + 201001027.

It is an arithmetic number, because the mean of its divisors is an integer number (25527084709).

Almost surely, 2^145122481213 is an apocalyptic number.

It is an amenable number.

145122481213 is a deficient number, since it is larger than the sum of its proper divisors (8040027041).

145122481213 is an equidigital number, since it uses as much as digits as its factorization.

145122481213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402001371 (or 402001352 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The spelling of 145122481213 in words is "one hundred forty-five billion, one hundred twenty-two million, four hundred eighty-one thousand, two hundred thirteen".