201122220123 has 96 divisors (see below), whose sum is σ = 334026201600. Its totient is φ = 115496409600.

The previous prime is 201122220097. The next prime is 201122220181. The reversal of 201122220123 is 321022221102.

201122220123 is a `hidden beast` number, since 201 + 122 + 220 + 123 = 666.

It is not a de Polignac number, because 201122220123 - 2³⁷ = 63683266651 is a prime.

It is a super-2 number, since 2×201122220123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201122220096 and 201122220105.

It is not an unprimeable number, because it can be changed into a prime (201122220193) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 129006418 + ... + 129007976.

It is an arithmetic number, because the mean of its divisors is an integer number (3479439600).

Almost surely, 2^201122220123 is an apocalyptic number.

201122220123 is a deficient number, since it is larger than the sum of its proper divisors (132903981477).

201122220123 is a wasteful number, since it uses less digits than its factorization.

201122220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201122220123 its reverse (321022221102), we get a palindrome (522144441225).

The spelling of 201122220123 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-three".