20122200212220 has 36 divisors (see below), whose sum is σ = 61037340644280. Its totient is φ = 5365920056544.

The previous prime is 20122200212173. The next prime is 20122200212239. The reversal of 20122200212220 is 2221200222102.

20122200212220 is a `hidden beast` number, since 2 + 0 + 12 + 220 + 0 + 212 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20122200212220² (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 = 20122200212193 and 20122200212202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55895000410 + ... + 55895000769.

Almost surely, 2^{20122200212220} is an apocalyptic number.

20122200212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122200212220 is an abundant number, since it is smaller than the sum of its proper divisors (40915140432060).

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

20122200212220 is a wasteful number, since it uses less digits than its factorization.

20122200212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111790001194 (or 111790001189 counting only the distinct ones).

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

Adding to 20122200212220 its reverse (2221200222102), we get a palindrome (22343400434322).

The spelling of 20122200212220 in words is "twenty trillion, one hundred twenty-two billion, two hundred million, two hundred twelve thousand, two hundred twenty".