2211102222121 has 8 divisors (see below), whose sum is σ = 2397168131400. Its totient is φ = 2027319330432.

The previous prime is 2211102222113. The next prime is 2211102222163. The reversal of 2211102222121 is 1212222011122.

It can be written as a sum of positive squares in 4 ways, for example, as 108425318400 + 2102676903721 = 329280^2 + 1450061^2 .

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 2211102222121 - 2³ = 2211102222113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211102202121) 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, 570752380 + ... + 570756253.

It is an arithmetic number, because the mean of its divisors is an integer number (299646016425).

Almost surely, 2^{2211102222121} is an apocalyptic number.

It is an amenable number.

2211102222121 is a deficient number, since it is larger than the sum of its proper divisors (186065909279).

2211102222121 is a wasteful number, since it uses less digits than its factorization.

2211102222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141508795.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2211102222121 its reverse (1212222011122), we get a palindrome (3423324233243).

The spelling of 2211102222121 in words is "two trillion, two hundred eleven billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty-one".