1120121221212 has 120 divisors (see below), whose sum is σ = 3347068623360. Its totient is φ = 319983605280.

The previous prime is 1120121221199. The next prime is 1120121221243. The reversal of 1120121221212 is 2121221210211.

1120121221212 is a `hidden beast` number, since 11 + 201 + 21 + 221 + 212 = 666.

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 39 ways as a sum of consecutive naturals, for example, 15547489 + ... + 15619367.

It is an arithmetic number, because the mean of its divisors is an integer number (27892238528).

Almost surely, 2^{1120121221212} is an apocalyptic number.

1120121221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1120121221212 is an abundant number, since it is smaller than the sum of its proper divisors (2226947402148).

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

1120121221212 is a wasteful number, since it uses less digits than its factorization.

1120121221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78773 (or 78762 counting only the distinct ones).

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

Adding to 1120121221212 its reverse (2121221210211), we get a palindrome (3241342431423).

The spelling of 1120121221212 in words is "one trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".