220100010012121 has 4 divisors (see below), whose sum is σ = 220279977315072. Its totient is φ = 219920042709172.

The previous prime is 220100010012067. The next prime is 220100010012229. The reversal of 220100010012121 is 121210010001022.

220100010012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220100010012121 - 2⁴¹ = 217900986756569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220100010112121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89983649641 + ... + 89983652086.

It is an arithmetic number, because the mean of its divisors is an integer number (55069994328768).

Almost surely, 2^{220100010012121} is an apocalyptic number.

It is an amenable number.

220100010012121 is a deficient number, since it is larger than the sum of its proper divisors (179967302951).

220100010012121 is a wasteful number, since it uses less digits than its factorization.

220100010012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179967302950.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220100010012121 its reverse (121210010001022), we get a palindrome (341310020013143).

The spelling of 220100010012121 in words is "two hundred twenty trillion, one hundred billion, ten million, twelve thousand, one hundred twenty-one".