100222001030021 has 4 divisors (see below), whose sum is σ = 107931385724652. Its totient is φ = 92512616335392.

The previous prime is 100222001029963. The next prime is 100222001030057. The reversal of 100222001030021 is 120030100222001.

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 14736462216100 + 85485538813921 = 3838810^2 + 9245839^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222001030021 - 2⁴² = 95823954518917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100222001029978 and 100222001030005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222001030821) 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, 3854692347296 + ... + 3854692347321.

It is an arithmetic number, because the mean of its divisors is an integer number (26982846431163).

Almost surely, 2^{100222001030021} is an apocalyptic number.

It is an amenable number.

100222001030021 is a deficient number, since it is larger than the sum of its proper divisors (7709384694631).

100222001030021 is an equidigital number, since it uses as much as digits as its factorization.

100222001030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709384694630.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100222001030021 its reverse (120030100222001), we get a palindrome (220252101252022).

The spelling of 100222001030021 in words is "one hundred trillion, two hundred twenty-two billion, one million, thirty thousand, twenty-one".