20212120010001 has 16 divisors (see below), whose sum is σ = 26968439427840. Its totient is φ = 13465276755840.

The previous prime is 20212120009997. The next prime is 20212120010009. The reversal of 20212120010001 is 10001002121202.

It is not a de Polignac number, because 20212120010001 - 2² = 20212120009997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212120010009) 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, 25703896 + ... + 26478566.

It is an arithmetic number, because the mean of its divisors is an integer number (1685527464240).

Almost surely, 2^{20212120010001} is an apocalyptic number.

It is an amenable number.

20212120010001 is a deficient number, since it is larger than the sum of its proper divisors (6756319417839).

20212120010001 is a wasteful number, since it uses less digits than its factorization.

20212120010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780776.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20212120010001 its reverse (10001002121202), we get a palindrome (30213122131203).

The spelling of 20212120010001 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, ten thousand, one".