1220210123220 has 144 divisors (see below), whose sum is σ = 4038135558912. Its totient is φ = 295782923520.

The previous prime is 1220210123201. The next prime is 1220210123221. The reversal of 1220210123220 is 223210120221.

1220210123220 is a `hidden beast` number, since 1 + 220 + 210 + 1 + 232 + 2 + 0 = 666.

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 = 1220210123193 and 1220210123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220210123221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33528954 + ... + 33565326.

It is an arithmetic number, because the mean of its divisors is an integer number (28042608048).

Almost surely, 2^{1220210123220} is an apocalyptic number.

1220210123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220210123220 is an abundant number, since it is smaller than the sum of its proper divisors (2817925435692).

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

1220210123220 is a wasteful number, since it uses less digits than its factorization.

1220210123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53342 (or 53337 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220210123220 its reverse (223210120221), we get a palindrome (1443420243441).

The spelling of 1220210123220 in words is "one trillion, two hundred twenty billion, two hundred ten million, one hundred twenty-three thousand, two hundred twenty".