2211222121101 has 24 divisors (see below), whose sum is σ = 3650537404800. Its totient is φ = 1263463432416.

The previous prime is 2211222121081. The next prime is 2211222121117. The reversal of 2211222121101 is 1011212221122.

2211222121101 is a `hidden beast` number, since 221 + 1 + 222 + 121 + 101 = 666.

2211222121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2211222121101 - 2¹³ = 2211222112909 is a prime.

It is a super-3 number, since 3×2211222121101³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222121181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402450 + ... + 2141123.

It is an arithmetic number, because the mean of its divisors is an integer number (152105725200).

Almost surely, 2^{2211222121101} is an apocalyptic number.

2211222121101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2211222121101 is a deficient number, since it is larger than the sum of its proper divisors (1439315283699).

2211222121101 is a wasteful number, since it uses less digits than its factorization.

2211222121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557385 (or 2557382 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211222121101 its reverse (1011212221122), we get a palindrome (3222434342223).

The spelling of 2211222121101 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred one".