220021121020202 has 16 divisors (see below), whose sum is σ = 336586890388392. Its totient is φ = 107837801142720.

The previous prime is 220021121020147. The next prime is 220021121020219. The reversal of 220021121020202 is 202020121120022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 214290981419761 + 5730139600441 = 14638681^2 + 2393771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3077527073 + ... + 3077598564.

Almost surely, 2^{220021121020202} is an apocalyptic number.

220021121020202 is a deficient number, since it is larger than the sum of its proper divisors (116565769368190).

220021121020202 is a wasteful number, since it uses less digits than its factorization.

220021121020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155125993.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220021121020202 its reverse (202020121120022), we get a palindrome (422041242140224).

The spelling of 220021121020202 in words is "two hundred twenty trillion, twenty-one billion, one hundred twenty-one million, twenty thousand, two hundred two".