20012010220121 has 8 divisors (see below), whose sum is σ = 20169696645120. Its totient is φ = 19854325538208.

The previous prime is 20012010220061. The next prime is 20012010220207. The reversal of 20012010220121 is 12102201021002.

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 20012010220121 - 2³⁰ = 20010936478297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012010220096 and 20012010220105.

It is not an unprimeable number, because it can be changed into a prime (20012010222121) 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, 32214365 + ... + 32829701.

It is an arithmetic number, because the mean of its divisors is an integer number (2521212080640).

Almost surely, 2^{20012010220121} is an apocalyptic number.

It is an amenable number.

20012010220121 is a deficient number, since it is larger than the sum of its proper divisors (157686424999).

20012010220121 is a wasteful number, since it uses less digits than its factorization.

20012010220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871543.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012010220121 its reverse (12102201021002), we get a palindrome (32114211241123).

The spelling of 20012010220121 in words is "twenty trillion, twelve billion, ten million, two hundred twenty thousand, one hundred twenty-one".