212111101021110 has 128 divisors (see below), whose sum is σ = 528844565606400. Its totient is φ = 54400953277440.

The previous prime is 212111101021103. The next prime is 212111101021151. The reversal of 212111101021110 is 11120101111212.

It is a super-2 number, since 2×212111101021110² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212111101021110.

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, 362365651 + ... + 362950529.

It is an arithmetic number, because the mean of its divisors is an integer number (4131598168800).

Almost surely, 2^{212111101021110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212111101021110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264422282803200).

212111101021110 is an abundant number, since it is smaller than the sum of its proper divisors (316733464585290).

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

212111101021110 is a wasteful number, since it uses less digits than its factorization.

212111101021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588686.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 212111101021110 its reverse (11120101111212), we get a palindrome (223231202132322).

It can be divided in two parts, 21211110102 and 1110, that added together give a palindrome (21211111212).

The spelling of 212111101021110 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred one million, twenty-one thousand, one hundred ten".