221201421012242 has 8 divisors (see below), whose sum is σ = 361965961656432. Its totient is φ = 100546100460100.

The previous prime is 221201421012241. The next prime is 221201421012259. The reversal of 221201421012242 is 242210124102122.

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

It is not an unprimeable number, because it can be changed into a prime (221201421012241) 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 3 ways as a sum of consecutive naturals, for example, 5027305022984 + ... + 5027305023027.

It is an arithmetic number, because the mean of its divisors is an integer number (45245745207054).

Almost surely, 2^{221201421012242} is an apocalyptic number.

221201421012242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221201421012242 is a deficient number, since it is larger than the sum of its proper divisors (140764540644190).

221201421012242 is a wasteful number, since it uses less digits than its factorization.

221201421012242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054610046024.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 221201421012242 its reverse (242210124102122), we get a palindrome (463411545114364).

The spelling of 221201421012242 in words is "two hundred twenty-one trillion, two hundred one billion, four hundred twenty-one million, twelve thousand, two hundred forty-two".