2121110211102 has 8 divisors (see below), whose sum is σ = 4242220422216. Its totient is φ = 707036737032.

The previous prime is 2121110211019. The next prime is 2121110211109. The reversal of 2121110211102 is 2011120111212.

It is a happy number.

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

2121110211102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121110211109) 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, 176759184253 + ... + 176759184264.

It is an arithmetic number, because the mean of its divisors is an integer number (530277552777).

Almost surely, 2^{2121110211102} is an apocalyptic number.

2121110211102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121110211102 is a wasteful number, since it uses less digits than its factorization.

2121110211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353518368522.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121110211102 its reverse (2011120111212), we get a palindrome (4132230322314).

The spelling of 2121110211102 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, one hundred two".