20001010221101 has 64 divisors (see below), whose sum is σ = 26361025689600. Its totient is φ = 14732612294400.

The previous prime is 20001010221097. The next prime is 20001010221103. The reversal of 20001010221101 is 10112201010002.

It is not a de Polignac number, because 20001010221101 - 2² = 20001010221097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001010221103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291819206 + ... + 291887736.

It is an arithmetic number, because the mean of its divisors is an integer number (411891026400).

Almost surely, 2^{20001010221101} is an apocalyptic number.

It is an amenable number.

20001010221101 is a deficient number, since it is larger than the sum of its proper divisors (6360015468499).

20001010221101 is a wasteful number, since it uses less digits than its factorization.

20001010221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71490.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001010221101 its reverse (10112201010002), we get a palindrome (30113211231103).

The spelling of 20001010221101 in words is "twenty trillion, one billion, ten million, two hundred twenty-one thousand, one hundred one".