155122001441 has 4 divisors (see below), whose sum is σ = 169224001584. Its totient is φ = 141020001300.

The previous prime is 155122001413. The next prime is 155122001483. The reversal of 155122001441 is 144100221551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155122001441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155122001441.

It is not an unprimeable number, because it can be changed into a prime (155122006441) 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, 7051000055 + ... + 7051000076.

It is an arithmetic number, because the mean of its divisors is an integer number (42306000396).

Almost surely, 2^155122001441 is an apocalyptic number.

155122001441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155122001441 is a deficient number, since it is larger than the sum of its proper divisors (14102000143).

155122001441 is a wasteful number, since it uses less digits than its factorization.

155122001441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102000142.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 155122001441 its reverse (144100221551), we get a palindrome (299222222992).

The spelling of 155122001441 in words is "one hundred fifty-five billion, one hundred twenty-two million, one thousand, four hundred forty-one".