100222222121021 has 128 divisors (see below), whose sum is σ = 136636298330112. Its totient is φ = 70986222720000.

The previous prime is 100222222121003. The next prime is 100222222121027. The reversal of 100222222121021 is 120121222222001.

It is not a de Polignac number, because 100222222121021 - 2⁶ = 100222222120957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222222120984 and 100222222121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222222121027) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42092490251 + ... + 42092492631.

It is an arithmetic number, because the mean of its divisors is an integer number (1067471080704).

Almost surely, 2^{100222222121021} is an apocalyptic number.

100222222121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100222222121021 is a deficient number, since it is larger than the sum of its proper divisors (36414076209091).

100222222121021 is a wasteful number, since it uses less digits than its factorization.

100222222121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 100222222121021 its reverse (120121222222001), we get a palindrome (220343444343022).

The spelling of 100222222121021 in words is "one hundred trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-one".