1011212122212 has 144 divisors (see below), whose sum is σ = 2727285095808. Its totient is φ = 315202567680.

The previous prime is 1011212122169. The next prime is 1011212122231. The reversal of 1011212122212 is 2122212121101.

1011212122212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1011212122212² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12290403 + ... + 12372405.

It is an arithmetic number, because the mean of its divisors is an integer number (18939479832).

Almost surely, 2^{1011212122212} is an apocalyptic number.

1011212122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011212122212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363642547904).

1011212122212 is an abundant number, since it is smaller than the sum of its proper divisors (1716072973596).

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

1011212122212 is a wasteful number, since it uses less digits than its factorization.

1011212122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82370 (or 82365 counting only the distinct ones).

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

Adding to 1011212122212 its reverse (2122212121101), we get a palindrome (3133424243313).

The spelling of 1011212122212 in words is "one trillion, eleven billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twelve".