20011022201121 has 32 divisors (see below), whose sum is σ = 31819111403520. Its totient is φ = 10937583607104.

The previous prime is 20011022201111. The next prime is 20011022201161. The reversal of 20011022201121 is 12110222011002.

It is not a de Polignac number, because 20011022201121 - 2⁵ = 20011022201089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20011022201121.

It is not an unprimeable number, because it can be changed into a prime (20011022201111) 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, 63256740 + ... + 63572298.

It is an arithmetic number, because the mean of its divisors is an integer number (994347231360).

Almost surely, 2^{20011022201121} is an apocalyptic number.

20011022201121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20011022201121 is a deficient number, since it is larger than the sum of its proper divisors (11808089202399).

20011022201121 is a wasteful number, since it uses less digits than its factorization.

20011022201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446885.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20011022201121 its reverse (12110222011002), we get a palindrome (32121244212123).

The spelling of 20011022201121 in words is "twenty trillion, eleven billion, twenty-two million, two hundred one thousand, one hundred twenty-one".