42220222202251 has 4 divisors (see below), whose sum is σ = 42220310670400. Its totient is φ = 42220133734104.

The previous prime is 42220222202201. The next prime is 42220222202267. The reversal of 42220222202251 is 15220222202224.

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

It is a cyclic number.

It is not a de Polignac number, because 42220222202251 - 2²¹ = 42220220105099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42220222202201) 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, 43514316 + ... + 44473993.

It is an arithmetic number, because the mean of its divisors is an integer number (10555077667600).

Almost surely, 2^{42220222202251} is an apocalyptic number.

42220222202251 is a deficient number, since it is larger than the sum of its proper divisors (88468149).

42220222202251 is an equidigital number, since it uses as much as digits as its factorization.

42220222202251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88468148.

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 42220222202251 its reverse (15220222202224), we get a palindrome (57440444404475).

The spelling of 42220222202251 in words is "forty-two trillion, two hundred twenty billion, two hundred twenty-two million, two hundred two thousand, two hundred fifty-one".