201122111220123 has 32 divisors (see below), whose sum is σ = 285966507412800. Its totient is φ = 125490798429696.

The previous prime is 201122111220103. The next prime is 201122111220131. The reversal of 201122111220123 is 321022111221102.

It is not a de Polignac number, because 201122111220123 - 2¹⁸ = 201122110957979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201122111220123.

It is not an unprimeable number, because it can be changed into a prime (201122111220103) 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, 115267336 + ... + 116999157.

It is an arithmetic number, because the mean of its divisors is an integer number (8936453356650).

Almost surely, 2^{201122111220123} is an apocalyptic number.

201122111220123 is a deficient number, since it is larger than the sum of its proper divisors (84844396192677).

201122111220123 is a wasteful number, since it uses less digits than its factorization.

201122111220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232266831.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 201122111220123 its reverse (321022111221102), we get a palindrome (522144222441225).

The spelling of 201122111220123 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-three".