100222021221001 has 4 divisors (see below), whose sum is σ = 100242437200900. Its totient is φ = 100201605241104.

The previous prime is 100222021220987. The next prime is 100222021221083. The reversal of 100222021221001 is 100122120222001.

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 56151807889401 + 44070213331600 = 7493451^2 + 6638540^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222021221001 - 2²³ = 100222012832393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100222021281001) 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, 10207982586 + ... + 10207992403.

It is an arithmetic number, because the mean of its divisors is an integer number (25060609300225).

Almost surely, 2^{100222021221001} is an apocalyptic number.

It is an amenable number.

100222021221001 is a deficient number, since it is larger than the sum of its proper divisors (20415979899).

100222021221001 is an equidigital number, since it uses as much as digits as its factorization.

100222021221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415979898.

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

Adding to 100222021221001 its reverse (100122120222001), we get a palindrome (200344141443002).

The spelling of 100222021221001 in words is "one hundred trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, one".