221441020233242 has 4 divisors (see below), whose sum is σ = 332161530349866. Its totient is φ = 110720510116620.

The previous prime is 221441020233241. The next prime is 221441020233253. The reversal of 221441020233242 is 242332020144122.

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

It can be written as a sum of positive squares in only one way, i.e., 169075694473921 + 52365325759321 = 13002911^2 + 7236389^2 .

It is a super-2 number, since 2×221441020233242² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221441020233199 and 221441020233208.

It is not an unprimeable number, because it can be changed into a prime (221441020233241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55360255058309 + ... + 55360255058312.

Almost surely, 2^{221441020233242} is an apocalyptic number.

221441020233242 is a deficient number, since it is larger than the sum of its proper divisors (110720510116624).

221441020233242 is a wasteful number, since it uses less digits than its factorization.

221441020233242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110720510116623.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 221441020233242 its reverse (242332020144122), we get a palindrome (463773040377364).

The spelling of 221441020233242 in words is "two hundred twenty-one trillion, four hundred forty-one billion, twenty million, two hundred thirty-three thousand, two hundred forty-two".