2111202111102 has 128 divisors (see below), whose sum is σ = 4953033778176. Its totient is φ = 587361825792.

The previous prime is 2111202111047. The next prime is 2111202111121. The reversal of 2111202111102 is 2011112021112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1218234628 + ... + 1218236360.

It is an arithmetic number, because the mean of its divisors is an integer number (38695576392).

Almost surely, 2^{2111202111102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111202111102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476516889088).

2111202111102 is an abundant number, since it is smaller than the sum of its proper divisors (2841831667074).

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

2111202111102 is a wasteful number, since it uses less digits than its factorization.

2111202111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474.

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

Adding to 2111202111102 its reverse (2011112021112), we get a palindrome (4122314132214).

The spelling of 2111202111102 in words is "two trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, one hundred two".