20011201102011 has 32 divisors (see below), whose sum is σ = 31143889502208. Its totient is φ = 11191014272160.

The previous prime is 20011201101923. The next prime is 20011201102037. The reversal of 20011201102011 is 11020110211002.

It is not a de Polignac number, because 20011201102011 - 2⁹ = 20011201101499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011201102411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16377826 + ... + 17557208.

It is an arithmetic number, because the mean of its divisors is an integer number (973246546944).

Almost surely, 2^{20011201102011} is an apocalyptic number.

20011201102011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20011201102011 is a deficient number, since it is larger than the sum of its proper divisors (11132688400197).

20011201102011 is a wasteful number, since it uses less digits than its factorization.

20011201102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196631.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011201102011 its reverse (11020110211002), we get a palindrome (31031311313013).

The spelling of 20011201102011 in words is "twenty trillion, eleven billion, two hundred one million, one hundred two thousand, eleven".