2212121101 has 8 divisors (see below), whose sum is σ = 2234777600. Its totient is φ = 2189507760.

The previous prime is 2212121099. The next prime is 2212121137. The reversal of 2212121101 is 1011212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2212121101 - 2¹ = 2212121099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212131101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97780 + ... + 118258.

It is an arithmetic number, because the mean of its divisors is an integer number (279347200).

Almost surely, 2^2212121101 is an apocalyptic number.

It is an amenable number.

2212121101 is a deficient number, since it is larger than the sum of its proper divisors (22656499).

2212121101 is a wasteful number, since it uses less digits than its factorization.

2212121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21579.

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

The square root of 2212121101 is about 47033.1914821863. The cubic root of 2212121101 is about 1302.9756493383.

Adding to 2212121101 its reverse (1011212122), we get a palindrome (3223333223).

The spelling of 2212121101 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred one".