22221201145 has 32 divisors (see below), whose sum is σ = 31704753024. Its totient is φ = 14737958400.

The previous prime is 22221201091. The next prime is 22221201187. The reversal of 22221201145 is 54110212222.

It is not a de Polignac number, because 22221201145 - 2¹⁵ = 22221168377 is a prime.

It is a super-2 number, since 2×22221201145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127876 + ... + 246565.

It is an arithmetic number, because the mean of its divisors is an integer number (990773532).

Almost surely, 2^22221201145 is an apocalyptic number.

It is an amenable number.

22221201145 is a deficient number, since it is larger than the sum of its proper divisors (9483551879).

22221201145 is a wasteful number, since it uses less digits than its factorization.

22221201145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374553.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 22221201145 its reverse (54110212222), we get a palindrome (76331413367).

The spelling of 22221201145 in words is "twenty-two billion, two hundred twenty-one million, two hundred one thousand, one hundred forty-five".