100000220022121 has 4 divisors (see below), whose sum is σ = 100091377926612. Its totient is φ = 99909062117632.

The previous prime is 100000220022119. The next prime is 100000220022133. The reversal of 100000220022121 is 121220022000001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8616925411600 + 91383294610521 = 2935460^2 + 9559461^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000220022121 - 2¹ = 100000220022119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000220022221) 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, 45578950600 + ... + 45578952793.

It is an arithmetic number, because the mean of its divisors is an integer number (25022844481653).

Almost surely, 2^{100000220022121} is an apocalyptic number.

It is an amenable number.

100000220022121 is a deficient number, since it is larger than the sum of its proper divisors (91157904491).

100000220022121 is an equidigital number, since it uses as much as digits as its factorization.

100000220022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91157904490.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100000220022121 its reverse (121220022000001), we get a palindrome (221220242022122).

The spelling of 100000220022121 in words is "one hundred trillion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".