220020220121121 has 80 divisors (see below), whose sum is σ = 379100230975488. Its totient is φ = 124567108092000.

The previous prime is 220020220121087. The next prime is 220020220121123. The reversal of 220020220121121 is 121121022020022.

It is a happy number.

220020220121121 is a `hidden beast` number, since 2 + 200 + 2 + 0 + 220 + 121 + 121 = 666.

It is not a de Polignac number, because 220020220121121 - 2¹⁹ = 220020219596833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220020220121094 and 220020220121103.

It is not an unprimeable number, because it can be changed into a prime (220020220121123) 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 79 ways as a sum of consecutive naturals, for example, 29436456 + ... + 36146166.

Almost surely, 2^{220020220121121} is an apocalyptic number.

220020220121121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220020220121121 is a deficient number, since it is larger than the sum of its proper divisors (159080010854367).

220020220121121 is a wasteful number, since it uses less digits than its factorization.

220020220121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710264 (or 6710255 counting only the distinct ones).

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

Adding to 220020220121121 its reverse (121121022020022), we get a palindrome (341141242141143).

The spelling of 220020220121121 in words is "two hundred twenty trillion, twenty billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".