1011112212222 has 48 divisors (see below), whose sum is σ = 2504505530592. Its totient is φ = 288796999680.

The previous prime is 1011112212193. The next prime is 1011112212223. The reversal of 1011112212222 is 2222122111101.

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

It is a junction number, because it is equal to n+sod(n) for n = 1011112212195 and 1011112212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011112212223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 883779 + ... + 1674302.

It is an arithmetic number, because the mean of its divisors is an integer number (52177198554).

Almost surely, 2^{1011112212222} is an apocalyptic number.

1011112212222 is an abundant number, since it is smaller than the sum of its proper divisors (1493393318370).

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

1011112212222 is a wasteful number, since it uses less digits than its factorization.

1011112212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561233 (or 2561230 counting only the distinct ones).

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

Adding to 1011112212222 its reverse (2222122111101), we get a palindrome (3233234323323).

The spelling of 1011112212222 in words is "one trillion, eleven billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".