100220100122221 has 4 divisors (see below), whose sum is σ = 100723718716000. Its totient is φ = 99716481528444.

The previous prime is 100220100122209. The next prime is 100220100122323. The reversal of 100220100122221 is 122221001022001.

It is a happy number.

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 100220100122221 - 2⁵ = 100220100122189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220100122195 and 100220100122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220100122921) 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, 251809296591 + ... + 251809296988.

It is an arithmetic number, because the mean of its divisors is an integer number (25180929679000).

Almost surely, 2^{100220100122221} is an apocalyptic number.

It is an amenable number.

100220100122221 is a deficient number, since it is larger than the sum of its proper divisors (503618593779).

100220100122221 is an equidigital number, since it uses as much as digits as its factorization.

100220100122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503618593778.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100220100122221 its reverse (122221001022001), we get a palindrome (222441101144222).

The spelling of 100220100122221 in words is "one hundred trillion, two hundred twenty billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-one".