200101123 has 4 divisors (see below), whose sum is σ = 201426448. Its totient is φ = 198775800.

The previous prime is 200101079. The next prime is 200101133. The reversal of 200101123 is 321101002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321101002 = 2 ⋅160550501.

It is a cyclic number.

It is not a de Polignac number, because 200101123 - 2¹³ = 200092931 is a prime.

It is a super-2 number, since 2×200101123² = 80080918851722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200101133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662436 + ... + 662737.

It is an arithmetic number, because the mean of its divisors is an integer number (50356612).

Almost surely, 2^200101123 is an apocalyptic number.

200101123 is a deficient number, since it is larger than the sum of its proper divisors (1325325).

200101123 is a wasteful number, since it uses less digits than its factorization.

200101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325324.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 200101123 is about 14145.7104098734. The cubic root of 200101123 is about 584.9020928510.

Adding to 200101123 its reverse (321101002), we get a palindrome (521202125).

The spelling of 200101123 in words is "two hundred million, one hundred one thousand, one hundred twenty-three".