100001021222 has 8 divisors (see below), whose sum is σ = 150309544656. Its totient is φ = 49897839672.

The previous prime is 100001021189. The next prime is 100001021273. The reversal of 100001021222 is 222120100001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51334253 + ... + 51336200.

It is an arithmetic number, because the mean of its divisors is an integer number (18788693082).

Almost surely, 2^100001021222 is an apocalyptic number.

100001021222 is a deficient number, since it is larger than the sum of its proper divisors (50308523434).

100001021222 is a wasteful number, since it uses less digits than its factorization.

100001021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102670942.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100001021222 its reverse (222120100001), we get a palindrome (322121121223).

The spelling of 100001021222 in words is "one hundred billion, one million, twenty-one thousand, two hundred twenty-two".