20012102022121 has 8 divisors (see below), whose sum is σ = 21912541588800. Its totient is φ = 18125188716240.

The previous prime is 20012102022089. The next prime is 20012102022137. The reversal of 20012102022121 is 12122020121002.

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 not a de Polignac number, because 20012102022121 - 2⁵ = 20012102022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012102022095 and 20012102022104.

It is not an unprimeable number, because it can be changed into a prime (20012102022421) 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, 3381562101 + ... + 3381568018.

It is an arithmetic number, because the mean of its divisors is an integer number (2739067698600).

Almost surely, 2^{20012102022121} is an apocalyptic number.

It is an amenable number.

20012102022121 is a deficient number, since it is larger than the sum of its proper divisors (1900439566679).

20012102022121 is a wasteful number, since it uses less digits than its factorization.

20012102022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763130399.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012102022121 its reverse (12122020121002), we get a palindrome (32134122143123).

The spelling of 20012102022121 in words is "twenty trillion, twelve billion, one hundred two million, twenty-two thousand, one hundred twenty-one".