12021111022220 has 24 divisors (see below), whose sum is σ = 25259191566000. Its totient is φ = 4805614233792.

The previous prime is 12021111022211. The next prime is 12021111022229. The reversal of 12021111022220 is 2222011112021.

It is an interprime number because it is at equal distance from previous prime (12021111022211) and next prime (12021111022229).

It is a super-2 number, since 2×12021111022220² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021111022229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176851115 + ... + 176919074.

It is an arithmetic number, because the mean of its divisors is an integer number (1052466315250).

Almost surely, 2^{12021111022220} is an apocalyptic number.

12021111022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021111022220 is an abundant number, since it is smaller than the sum of its proper divisors (13238080543780).

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

12021111022220 is a wasteful number, since it uses less digits than its factorization.

12021111022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353771897 (or 353771895 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021111022220 its reverse (2222011112021), we get a palindrome (14243122134241).

The spelling of 12021111022220 in words is "twelve trillion, twenty-one billion, one hundred eleven million, twenty-two thousand, two hundred twenty".