20011011001201 has 16 divisors (see below), whose sum is σ = 21839557084416. Its totient is φ = 18184027050000.

The previous prime is 20011011001193. The next prime is 20011011001237. The reversal of 20011011001201 is 10210011011002.

It is a cyclic number.

It is not a de Polignac number, because 20011011001201 - 2³ = 20011011001193 is a prime.

It is a super-2 number, since 2×20011011001201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011011001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292648546 + ... + 292716916.

It is an arithmetic number, because the mean of its divisors is an integer number (1364972317776).

Almost surely, 2^{20011011001201} is an apocalyptic number.

It is an amenable number.

20011011001201 is a deficient number, since it is larger than the sum of its proper divisors (1828546083215).

20011011001201 is a wasteful number, since it uses less digits than its factorization.

20011011001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79404.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20011011001201 its reverse (10210011011002), we get a palindrome (30221022012203).

The spelling of 20011011001201 in words is "twenty trillion, eleven billion, eleven million, one thousand, two hundred one".