12021223220220 has 96 divisors (see below), whose sum is σ = 37188930014208. Its totient is φ = 2885913428992.

The previous prime is 12021223220173. The next prime is 12021223220249. The reversal of 12021223220220 is 2202232212021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256183344 + ... + 256230263.

It is an arithmetic number, because the mean of its divisors is an integer number (387384687648).

Almost surely, 2^{12021223220220} is an apocalyptic number.

12021223220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021223220220 is an abundant number, since it is smaller than the sum of its proper divisors (25167706793988).

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

12021223220220 is a wasteful number, since it uses less digits than its factorization.

12021223220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512413659 (or 512413657 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12021223220220 its reverse (2202232212021), we get a palindrome (14223455432241).

The spelling of 12021223220220 in words is "twelve trillion, twenty-one billion, two hundred twenty-three million, two hundred twenty thousand, two hundred twenty".