220202011121220 has 36 divisors (see below), whose sum is σ = 667946100401580. Its totient is φ = 58720536298944.

The previous prime is 220202011121161. The next prime is 220202011121237. The reversal of 220202011121220 is 22121110202022.

It is a happy number.

220202011121220 is a `hidden beast` number, since 220 + 2 + 0 + 201 + 1 + 1 + 21 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77893192306944 + 142308818814276 = 8825712^2 + 11929326^2 .

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

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 = 220202011121193 and 220202011121202.

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, 611672252935 + ... + 611672253294.

Almost surely, 2^{220202011121220} is an apocalyptic number.

220202011121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220202011121220 is an abundant number, since it is smaller than the sum of its proper divisors (447744089280360).

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

220202011121220 is a wasteful number, since it uses less digits than its factorization.

220202011121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223344506244 (or 1223344506239 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220202011121220 its reverse (22121110202022), we get a palindrome (242323121323242).

The spelling of 220202011121220 in words is "two hundred twenty trillion, two hundred two billion, eleven million, one hundred twenty-one thousand, two hundred twenty".