111212022012212 has 12 divisors (see below), whose sum is σ = 212313860205216. Its totient is φ = 50550919096440.

The previous prime is 111212022012211. The next prime is 111212022012257. The reversal of 111212022012212 is 212210220212111.

It is a super-2 number, since 2×111212022012212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212022012211) 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, 1263772977368 + ... + 1263772977455.

It is an arithmetic number, because the mean of its divisors is an integer number (17692821683768).

Almost surely, 2^{111212022012212} is an apocalyptic number.

It is an amenable number.

111212022012212 is a deficient number, since it is larger than the sum of its proper divisors (101101838193004).

111212022012212 is a wasteful number, since it uses less digits than its factorization.

111212022012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527545954838 (or 2527545954836 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111212022012212 its reverse (212210220212111), we get a palindrome (323422242224323).

The spelling of 111212022012212 in words is "one hundred eleven trillion, two hundred twelve billion, twenty-two million, twelve thousand, two hundred twelve".