1011122212212 has 108 divisors (see below), whose sum is σ = 3002618753316. Its totient is φ = 286031692800.

The previous prime is 1011122212159. The next prime is 1011122212223. The reversal of 1011122212212 is 2122122211101.

It can be written as a sum of positive squares in 2 ways, for example, as 833945198436 + 177177013776 = 913206^2 + 420924^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2659453 + ... + 3015780.

Almost surely, 2^{1011122212212} is an apocalyptic number.

1011122212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011122212212 is an abundant number, since it is smaller than the sum of its proper divisors (1991496541104).

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

1011122212212 is a wasteful number, since it uses less digits than its factorization.

1011122212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675358 (or 5675346 counting only the distinct ones).

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

Adding to 1011122212212 its reverse (2122122211101), we get a palindrome (3133244423313).

The spelling of 1011122212212 in words is "one trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twelve".