20202121033123 has 4 divisors (see below), whose sum is σ = 20216458948680. Its totient is φ = 20187783117568.

The previous prime is 20202121033069. The next prime is 20202121033153. The reversal of 20202121033123 is 32133012120202.

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 20202121033123 - 2¹³ = 20202121024931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202121033094 and 20202121033103.

It is not an unprimeable number, because it can be changed into a prime (20202121033153) 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, 7168955665 + ... + 7168958482.

It is an arithmetic number, because the mean of its divisors is an integer number (5054114737170).

Almost surely, 2^{20202121033123} is an apocalyptic number.

20202121033123 is a deficient number, since it is larger than the sum of its proper divisors (14337915557).

20202121033123 is a wasteful number, since it uses less digits than its factorization.

20202121033123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14337915556.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20202121033123 its reverse (32133012120202), we get a palindrome (52335133153325).

The spelling of 20202121033123 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, thirty-three thousand, one hundred twenty-three".