20020110100121 has 16 divisors (see below), whose sum is σ = 20130911907840. Its totient is φ = 19909662312960.

The previous prime is 20020110100093. The next prime is 20020110100129. The reversal of 20020110100121 is 12100101102002.

It is a cyclic number.

It is not a de Polignac number, because 20020110100121 - 2⁶ = 20020110100057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020110100129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321799400 + ... + 321861606.

It is an arithmetic number, because the mean of its divisors is an integer number (1258181994240).

Almost surely, 2^{20020110100121} is an apocalyptic number.

It is an amenable number.

20020110100121 is a deficient number, since it is larger than the sum of its proper divisors (110801807719).

20020110100121 is a wasteful number, since it uses less digits than its factorization.

20020110100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65024.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20020110100121 its reverse (12100101102002), we get a palindrome (32120211202123).

The spelling of 20020110100121 in words is "twenty trillion, twenty billion, one hundred ten million, one hundred thousand, one hundred twenty-one".