1111212120212 has 48 divisors (see below), whose sum is σ = 2149177121280. Its totient is φ = 500037576192.

The previous prime is 1111212120209. The next prime is 1111212120257. The reversal of 1111212120212 is 2120212121111.

It is a super-2 number, since 2×1111212120212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 5195573 + ... + 5405219.

It is an arithmetic number, because the mean of its divisors is an integer number (44774523360).

Almost surely, 2^{1111212120212} is an apocalyptic number.

It is an amenable number.

1111212120212 is a deficient number, since it is larger than the sum of its proper divisors (1037965001068).

1111212120212 is a wasteful number, since it uses less digits than its factorization.

1111212120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213080 (or 213078 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1111212120212 its reverse (2120212121111), we get a palindrome (3231424241323).

The spelling of 1111212120212 in words is "one trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred twelve".