1111212202212 has 144 divisors (see below), whose sum is σ = 3412582992000. Its totient is φ = 297801100800.

The previous prime is 1111212202171. The next prime is 1111212202213. The reversal of 1111212202212 is 2122022121111.

1111212202212 is a `hidden beast` number, since 111 + 121 + 220 + 2 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1111212202213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 665337 + ... + 1632512.

It is an arithmetic number, because the mean of its divisors is an integer number (23698493000).

Almost surely, 2^{1111212202212} is an apocalyptic number.

1111212202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111212202212 is an abundant number, since it is smaller than the sum of its proper divisors (2301370789788).

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

1111212202212 is a wasteful number, since it uses less digits than its factorization.

1111212202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297986 (or 2297981 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1111212202212 its reverse (2122022121111), we get a palindrome (3233234323323).

It can be divided in two parts, 1111 and 212202212, that multiplied together give a palindrome (235756657532).

The spelling of 1111212202212 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, two hundred twelve".