145521240211 has 4 divisors (see below), whose sum is σ = 145526602432. Its totient is φ = 145515877992.

The previous prime is 145521240173. The next prime is 145521240223. The reversal of 145521240211 is 112042125541.

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

It is a cyclic number.

It is not a de Polignac number, because 145521240211 - 2¹⁵ = 145521207443 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 145521240211.

It is not an unprimeable number, because it can be changed into a prime (145521240251) 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, 2640195 + ... + 2694748.

It is an arithmetic number, because the mean of its divisors is an integer number (36381650608).

Almost surely, 2^145521240211 is an apocalyptic number.

145521240211 is a deficient number, since it is larger than the sum of its proper divisors (5362221).

145521240211 is an equidigital number, since it uses as much as digits as its factorization.

145521240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362220.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 145521240211 its reverse (112042125541), we get a palindrome (257563365752).

The spelling of 145521240211 in words is "one hundred forty-five billion, five hundred twenty-one million, two hundred forty thousand, two hundred eleven".