20021100102201 has 32 divisors (see below), whose sum is σ = 29909417932800. Its totient is φ = 11805759046080.

The previous prime is 20021100102161. The next prime is 20021100102221. The reversal of 20021100102201 is 10220100112002.

It is not a de Polignac number, because 20021100102201 - 2²⁶ = 20021032993337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021100102221) 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, 54688080 + ... + 55052958.

It is an arithmetic number, because the mean of its divisors is an integer number (934669310400).

Almost surely, 2^{20021100102201} is an apocalyptic number.

It is an amenable number.

20021100102201 is a deficient number, since it is larger than the sum of its proper divisors (9888317830599).

20021100102201 is a wasteful number, since it uses less digits than its factorization.

20021100102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409869.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021100102201 its reverse (10220100112002), we get a palindrome (30241200214203).

The spelling of 20021100102201 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred two thousand, two hundred one".