111210202220212 has 12 divisors (see below), whose sum is σ = 195605761774500. Its totient is φ = 55322841713216.

The previous prime is 111210202220177. The next prime is 111210202220261. The reversal of 111210202220212 is 212022202012111.

It can be written as a sum of positive squares in 2 ways, for example, as 105031219328676 + 6178982891536 = 10248474^2 + 2485756^2 .

It is a super-3 number, since 3×111210202220212³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111210202220212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70564848337 + ... + 70564849912.

It is an arithmetic number, because the mean of its divisors is an integer number (16300480147875).

Almost surely, 2^{111210202220212} is an apocalyptic number.

It is an amenable number.

111210202220212 is a deficient number, since it is larger than the sum of its proper divisors (84395559554288).

111210202220212 is a wasteful number, since it uses less digits than its factorization.

111210202220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141129698450 (or 141129698448 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111210202220212 its reverse (212022202012111), we get a palindrome (323232404232323).

The spelling of 111210202220212 in words is "one hundred eleven trillion, two hundred ten billion, two hundred two million, two hundred twenty thousand, two hundred twelve".