2211002121 has 32 divisors (see below), whose sum is σ = 3160684800. Its totient is φ = 1371392000.

The previous prime is 2211002071. The next prime is 2211002141. The reversal of 2211002121 is 1212001122.

It is a cyclic number.

It is not a de Polignac number, because 2211002121 - 2⁹ = 2211001609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2211002097 and 2211002106.

It is not an unprimeable number, because it can be changed into a prime (2211002141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1133455 + ... + 1135403.

It is an arithmetic number, because the mean of its divisors is an integer number (98771400).

Almost surely, 2^2211002121 is an apocalyptic number.

It is an amenable number.

2211002121 is a deficient number, since it is larger than the sum of its proper divisors (949682679).

2211002121 is a wasteful number, since it uses less digits than its factorization.

2211002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2211002121 is about 47021.2943356518. The cubic root of 2211002121 is about 1302.7559130861.

Adding to 2211002121 its reverse (1212001122), we get a palindrome (3423003243).

Subtracting from 2211002121 its reverse (1212001122), we obtain a palindrome (999000999).

The spelling of 2211002121 in words is "two billion, two hundred eleven million, two thousand, one hundred twenty-one".