202011202123 has 8 divisors (see below), whose sum is σ = 205037485520. Its totient is φ = 198985248000.

The previous prime is 202011202117. The next prime is 202011202163. The reversal of 202011202123 is 321202110202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202011202123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202011202097 and 202011202106.

It is not an unprimeable number, because it can be changed into a prime (202011202163) 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, 1335283 + ... + 1478851.

It is an arithmetic number, because the mean of its divisors is an integer number (25629685690).

Almost surely, 2^202011202123 is an apocalyptic number.

202011202123 is a deficient number, since it is larger than the sum of its proper divisors (3026283397).

202011202123 is a wasteful number, since it uses less digits than its factorization.

202011202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164637.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 202011202123 its reverse (321202110202), we get a palindrome (523213312325).

The spelling of 202011202123 in words is "two hundred two billion, eleven million, two hundred two thousand, one hundred twenty-three".