2212121011 has 4 divisors (see below), whose sum is σ = 2266075224. Its totient is φ = 2158166800.

The previous prime is 2212120969. The next prime is 2212121029. The reversal of 2212121011 is 1101212122.

2212121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2212121011 - 2⁹ = 2212120499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212120982 and 2212121000.

It is not an unprimeable number, because it can be changed into a prime (2212127011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26977045 + ... + 26977126.

It is an arithmetic number, because the mean of its divisors is an integer number (566518806).

Almost surely, 2^2212121011 is an apocalyptic number.

2212121011 is a deficient number, since it is larger than the sum of its proper divisors (53954213).

2212121011 is an equidigital number, since it uses as much as digits as its factorization.

2212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53954212.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2212121011 is about 47033.1905254151. The cubic root of 2212121011 is about 1302.9756316678.

Adding to 2212121011 its reverse (1101212122), we get a palindrome (3313333133).

The spelling of 2212121011 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, eleven".