20101220022211 has 4 divisors (see below), whose sum is σ = 20105833572592. Its totient is φ = 20096606471832.

The previous prime is 20101220022187. The next prime is 20101220022277. The reversal of 20101220022211 is 11222002210102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20101220022211 - 2¹⁷ = 20101219891139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101220023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306768655 + ... + 2306777368.

It is an arithmetic number, because the mean of its divisors is an integer number (5026458393148).

Almost surely, 2^{20101220022211} is an apocalyptic number.

20101220022211 is a deficient number, since it is larger than the sum of its proper divisors (4613550381).

20101220022211 is an equidigital number, since it uses as much as digits as its factorization.

20101220022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613550380.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20101220022211 its reverse (11222002210102), we get a palindrome (31323222232313).

The spelling of 20101220022211 in words is "twenty trillion, one hundred one billion, two hundred twenty million, twenty-two thousand, two hundred eleven".