1121011222212 has 192 divisors, whose sum is σ = 3365258158080. Its totient is φ = 316091376000.

The previous prime is 1121011222171. The next prime is 1121011222231. The reversal of 1121011222212 is 2122221101211.

1121011222212 is a `hidden beast` number, since 11 + 210 + 11 + 222 + 212 = 666.

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 63 ways as a sum of consecutive naturals, for example, 23723113 + ... + 23770319.

It is an arithmetic number, because the mean of its divisors is an integer number (17527386240).

Almost surely, 2^{1121011222212} is an apocalyptic number.

1121011222212 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 1121011222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682629079040).

1121011222212 is an abundant number, since it is smaller than the sum of its proper divisors (2244246935868).

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

1121011222212 is a wasteful number, since it uses less digits than its factorization.

1121011222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47639 (or 47631 counting only the distinct ones).

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

Adding to 1121011222212 its reverse (2122221101211), we get a palindrome (3243232323423).

The spelling of 1121011222212 in words is "one trillion, one hundred twenty-one billion, eleven million, two hundred twenty-two thousand, two hundred twelve".