201126232221 has 32 divisors (see below), whose sum is σ = 274544995200. Its totient is φ = 130935239424.

The previous prime is 201126232217. The next prime is 201126232231. The reversal of 201126232221 is 122232621102.

It is not a de Polignac number, because 201126232221 - 2² = 201126232217 is a prime.

It is a super-2 number, since 2×201126232221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201126232191 and 201126232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201126232201) 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, 12127491 + ... + 12144063.

It is an arithmetic number, because the mean of its divisors is an integer number (8579531100).

Almost surely, 2^201126232221 is an apocalyptic number.

It is an amenable number.

201126232221 is a deficient number, since it is larger than the sum of its proper divisors (73418762979).

201126232221 is a wasteful number, since it uses less digits than its factorization.

201126232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17165.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 201126232221 its reverse (122232621102), we get a palindrome (323358853323).

The spelling of 201126232221 in words is "two hundred one billion, one hundred twenty-six million, two hundred thirty-two thousand, two hundred twenty-one".