100010221121221 has 8 divisors (see below), whose sum is σ = 101000659205664. Its totient is φ = 99019787701200.

The previous prime is 100010221121219. The next prime is 100010221121267. The reversal of 100010221121221 is 122121122010001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100010221121221 - 2¹ = 100010221121219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100010221121195 and 100010221121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010227121221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55491550 + ... + 57265456.

It is an arithmetic number, because the mean of its divisors is an integer number (12625082400708).

Almost surely, 2^{100010221121221} is an apocalyptic number.

It is an amenable number.

100010221121221 is a deficient number, since it is larger than the sum of its proper divisors (990438084443).

100010221121221 is a wasteful number, since it uses less digits than its factorization.

100010221121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332211.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100010221121221 its reverse (122121122010001), we get a palindrome (222131343131222).

The spelling of 100010221121221 in words is "one hundred trillion, ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".