220100012121 has 16 divisors (see below), whose sum is σ = 330472747008. Its totient is φ = 129090915600.

The previous prime is 220100012053. The next prime is 220100012123. The reversal of 220100012121 is 121210001022.

It is not a de Polignac number, because 220100012121 - 2⁹ = 220100011609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220100012097 and 220100012106.

It is not an unprimeable number, because it can be changed into a prime (220100012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107574741 + ... + 107576786.

It is an arithmetic number, because the mean of its divisors is an integer number (20654546688).

Almost surely, 2^220100012121 is an apocalyptic number.

It is an amenable number.

220100012121 is a deficient number, since it is larger than the sum of its proper divisors (110372734887).

220100012121 is a wasteful number, since it uses less digits than its factorization.

220100012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215151572.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 220100012121 its reverse (121210001022), we get a palindrome (341310013143).

The spelling of 220100012121 in words is "two hundred twenty billion, one hundred million, twelve thousand, one hundred twenty-one".