20101222212211 has 12 divisors (see below), whose sum is σ = 23390247168360. Its totient is φ = 17224319112000.

The previous prime is 20101222212209. The next prime is 20101222212241. The reversal of 20101222212211 is 11221222210102.

It is not a de Polignac number, because 20101222212211 - 2¹ = 20101222212209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101222212241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62933446 + ... + 63252043.

It is an arithmetic number, because the mean of its divisors is an integer number (1949187264030).

Almost surely, 2^{20101222212211} is an apocalyptic number.

20101222212211 is a deficient number, since it is larger than the sum of its proper divisors (3289024956149).

20101222212211 is a wasteful number, since it uses less digits than its factorization.

20101222212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126188754 (or 126188747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20101222212211 its reverse (11221222210102), we get a palindrome (31322444422313).

The spelling of 20101222212211 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred eleven".