222145203121131 has 32 divisors (see below), whose sum is σ = 314085058560000. Its totient is φ = 139266571818528.

The previous prime is 222145203121081. The next prime is 222145203121139. The reversal of 222145203121131 is 131121302541222.

It is not a de Polignac number, because 222145203121131 - 2⁶ = 222145203121067 is a prime.

It is a super-2 number, since 2×222145203121131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222145203121139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39372070 + ... + 44659268.

It is an arithmetic number, because the mean of its divisors is an integer number (9815158080000).

Almost surely, 2^{222145203121131} is an apocalyptic number.

222145203121131 is a deficient number, since it is larger than the sum of its proper divisors (91939855438869).

222145203121131 is a wasteful number, since it uses less digits than its factorization.

222145203121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292663.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 222145203121131 its reverse (131121302541222), we get a palindrome (353266505662353).

The spelling of 222145203121131 in words is "two hundred twenty-two trillion, one hundred forty-five billion, two hundred three million, one hundred twenty-one thousand, one hundred thirty-one".