20020111211001 has 16 divisors (see below), whose sum is σ = 29141248114368. Its totient is φ = 12124614753600.

The previous prime is 20020111210991. The next prime is 20020111211053. The reversal of 20020111211001 is 10011211102002.

It is not a de Polignac number, because 20020111211001 - 2⁶ = 20020111210937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20020111211071) 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, 219603246 + ... + 219694391.

It is an arithmetic number, because the mean of its divisors is an integer number (1821328007148).

Almost surely, 2^{20020111211001} is an apocalyptic number.

It is an amenable number.

20020111211001 is a deficient number, since it is larger than the sum of its proper divisors (9121136903367).

20020111211001 is a wasteful number, since it uses less digits than its factorization.

20020111211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439299032.

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

Adding to 20020111211001 its reverse (10011211102002), we get a palindrome (30031322313003).

The spelling of 20020111211001 in words is "twenty trillion, twenty billion, one hundred eleven million, two hundred eleven thousand, one".