201123102 has 16 divisors (see below), whose sum is σ = 415222272. Its totient is φ = 64878360.

The previous prime is 201123101. The next prime is 201123127. The reversal of 201123102 is 201321102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540468 + ... + 540839.

It is an arithmetic number, because the mean of its divisors is an integer number (25951392).

Almost surely, 2^201123102 is an apocalyptic number.

201123102 is an abundant number, since it is smaller than the sum of its proper divisors (214099170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201123102 is a wasteful number, since it uses less digits than its factorization.

201123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081343.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 201123102 is about 14181.7876870302. The cubic root of 201123102 is about 585.8961617158.

Adding to 201123102 its reverse (201321102), we get a palindrome (402444204).

The spelling of 201123102 in words is "two hundred one million, one hundred twenty-three thousand, one hundred two".