20101220220201 has 16 divisors (see below), whose sum is σ = 27167524930560. Its totient is φ = 13218376242960.

The previous prime is 20101220220181. The next prime is 20101220220209. The reversal of 20101220220201 is 10202202210102.

It is not a de Polignac number, because 20101220220201 - 2¹⁰ = 20101220219177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20101220220209) 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, 63811021 + ... + 64125258.

It is an arithmetic number, because the mean of its divisors is an integer number (1697970308160).

Almost surely, 2^{20101220220201} is an apocalyptic number.

It is an amenable number.

20101220220201 is a deficient number, since it is larger than the sum of its proper divisors (7066304710359).

20101220220201 is a wasteful number, since it uses less digits than its factorization.

20101220220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127936996.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20101220220201 its reverse (10202202210102), we get a palindrome (30303422430303).

The spelling of 20101220220201 in words is "twenty trillion, one hundred one billion, two hundred twenty million, two hundred twenty thousand, two hundred one".