221451545154122 has 8 divisors (see below), whose sum is σ = 332784588880416. Its totient is φ = 110523348860652.

The previous prime is 221451545154061. The next prime is 221451545154127.

221451545154122 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×221451545154122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221451545154127) 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, 101211856838 + ... + 101211859025.

It is an arithmetic number, because the mean of its divisors is an integer number (41598073610052).

Almost surely, 2^{221451545154122} is an apocalyptic number.

221451545154122 is a deficient number, since it is larger than the sum of its proper divisors (111333043726294).

221451545154122 is a wasteful number, since it uses less digits than its factorization.

221451545154122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202423716412.

The product of its digits is 640000, while the sum is 44.

The spelling of 221451545154122 in words is "two hundred twenty-one trillion, four hundred fifty-one billion, five hundred forty-five million, one hundred fifty-four thousand, one hundred twenty-two".