2102123211 has 8 divisors (see below), whose sum is σ = 2803054800. Its totient is φ = 1401303552.

The previous prime is 2102123209. The next prime is 2102123239. The reversal of 2102123211 is 1123212012.

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

It is not a de Polignac number, because 2102123211 - 2¹ = 2102123209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102123281) 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, 38215 + ... + 75263.

It is an arithmetic number, because the mean of its divisors is an integer number (350381850).

Almost surely, 2^2102123211 is an apocalyptic number.

2102123211 is a deficient number, since it is larger than the sum of its proper divisors (700931589).

2102123211 is a wasteful number, since it uses less digits than its factorization.

2102123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55965.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2102123211 is about 45848.9172282182. The cubic root of 2102123211 is about 1281.0105973610.

Adding to 2102123211 its reverse (1123212012), we get a palindrome (3225335223).

The spelling of 2102123211 in words is "two billion, one hundred two million, one hundred twenty-three thousand, two hundred eleven".