20010321313121 has 8 divisors (see below), whose sum is σ = 20036202751488. Its totient is φ = 19984455504000.

The previous prime is 20010321313111. The next prime is 20010321313123. The reversal of 20010321313121 is 12131312301002.

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 20010321313121 - 2⁶ = 20010321313057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20010321313093 and 20010321313102.

It is not an unprimeable number, because it can be changed into a prime (20010321313123) 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, 1343945 + ... + 6467366.

It is an arithmetic number, because the mean of its divisors is an integer number (2504525343936).

Almost surely, 2^{20010321313121} is an apocalyptic number.

It is an amenable number.

20010321313121 is a deficient number, since it is larger than the sum of its proper divisors (25881438367).

20010321313121 is a wasteful number, since it uses less digits than its factorization.

20010321313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814623.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20010321313121 its reverse (12131312301002), we get a palindrome (32141633614123).

The spelling of 20010321313121 in words is "twenty trillion, ten billion, three hundred twenty-one million, three hundred thirteen thousand, one hundred twenty-one".