202010201123 has 4 divisors (see below), whose sum is σ = 202047320328. Its totient is φ = 201973081920.

The previous prime is 202010201077. The next prime is 202010201177. The reversal of 202010201123 is 321102010202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202010201123 - 2⁸ = 202010200867 is a prime.

It is a super-2 number, since 2×202010201123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202010201098 and 202010201107.

It is not an unprimeable number, because it can be changed into a prime (202010291123) 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, 18551438 + ... + 18562323.

It is an arithmetic number, because the mean of its divisors is an integer number (50511830082).

Almost surely, 2^202010201123 is an apocalyptic number.

202010201123 is a deficient number, since it is larger than the sum of its proper divisors (37119205).

202010201123 is an equidigital number, since it uses as much as digits as its factorization.

202010201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37119204.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 202010201123 its reverse (321102010202), we get a palindrome (523112211325).

The spelling of 202010201123 in words is "two hundred two billion, ten million, two hundred one thousand, one hundred twenty-three".