20122122020220 has 72 divisors (see below), whose sum is σ = 66585931055280. Its totient is φ = 4878090186240.

The previous prime is 20122122020191. The next prime is 20122122020227. The reversal of 20122122020220 is 2202022122102.

20122122020220 is a `hidden beast` number, since 2 + 0 + 1 + 221 + 220 + 2 + 0 + 220 = 666.

It is a super-2 number, since 2×20122122020220² (a number of 27 digits) contains 22 as substring.

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 = 20122122020193 and 20122122020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122122020227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5081341965 + ... + 5081345924.

It is an arithmetic number, because the mean of its divisors is an integer number (924804597990).

Almost surely, 2^{20122122020220} is an apocalyptic number.

20122122020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122122020220 is an abundant number, since it is smaller than the sum of its proper divisors (46463809035060).

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

20122122020220 is a wasteful number, since it uses less digits than its factorization.

20122122020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162687915 (or 10162687910 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20122122020220 its reverse (2202022122102), we get a palindrome (22324144142322).

The spelling of 20122122020220 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty thousand, two hundred twenty".