212111111102 has 32 divisors (see below), whose sum is σ = 353778796800. Its totient is φ = 94563849600.

The previous prime is 212111111089. The next prime is 212111111123. The reversal of 212111111102 is 201111111212.

It is a super-2 number, since 2×212111111102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383702 + ... + 755942.

It is an arithmetic number, because the mean of its divisors is an integer number (11055587400).

Almost surely, 2^212111111102 is an apocalyptic number.

212111111102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212111111102 is a deficient number, since it is larger than the sum of its proper divisors (141667685698).

212111111102 is a wasteful number, since it uses less digits than its factorization.

212111111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372752.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 212111111102 its reverse (201111111212), we get a palindrome (413222222314).

The spelling of 212111111102 in words is "two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred two".