154210522012221 has 8 divisors (see below), whose sum is σ = 208430659888960. Its totient is φ = 101398699405152.

The previous prime is 154210522012201. The next prime is 154210522012223. The reversal of 154210522012221 is 122210225012451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 154210522012221 - 2²¹ = 154210519915069 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 (154210522012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352078817161 + ... + 352078817598.

It is an arithmetic number, because the mean of its divisors is an integer number (26053832486120).

Almost surely, 2^{154210522012221} is an apocalyptic number.

It is an amenable number.

154210522012221 is a deficient number, since it is larger than the sum of its proper divisors (54220137876739).

154210522012221 is an equidigital number, since it uses as much as digits as its factorization.

154210522012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704157634835.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 154210522012221 its reverse (122210225012451), we get a palindrome (276420747024672).

The spelling of 154210522012221 in words is "one hundred fifty-four trillion, two hundred ten billion, five hundred twenty-two million, twelve thousand, two hundred twenty-one".