2211121005 has 16 divisors (see below), whose sum is σ = 3541243200. Its totient is φ = 1178114688.

The previous prime is 2211120971. The next prime is 2211121019. The reversal of 2211121005 is 5001211122.

2211121005 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 2211121005 - 2¹⁸ = 2210858861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55855 + ... + 86844.

It is an arithmetic number, because the mean of its divisors is an integer number (221327700).

Almost surely, 2^2211121005 is an apocalyptic number.

It is an amenable number.

2211121005 is a deficient number, since it is larger than the sum of its proper divisors (1330122195).

2211121005 is a wasteful number, since it uses less digits than its factorization.

2211121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143740.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2211121005 is about 47022.5584693134. The cubic root of 2211121005 is about 1302.7792620850.

Adding to 2211121005 its reverse (5001211122), we get a palindrome (7212332127).

The spelling of 2211121005 in words is "two billion, two hundred eleven million, one hundred twenty-one thousand, five".