101222222021 has 4 divisors (see below), whose sum is σ = 104712643500. Its totient is φ = 97731800544.

The previous prime is 101222221883. The next prime is 101222222033. The reversal of 101222222021 is 120222222101.

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 20474748100 + 80747473921 = 143090^2 + 284161^2 .

It is a cyclic number.

It is not a de Polignac number, because 101222222021 - 2¹⁰ = 101222220997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222222221) 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, 1745210696 + ... + 1745210753.

It is an arithmetic number, because the mean of its divisors is an integer number (26178160875).

Almost surely, 2^101222222021 is an apocalyptic number.

It is an amenable number.

101222222021 is a deficient number, since it is larger than the sum of its proper divisors (3490421479).

101222222021 is an equidigital number, since it uses as much as digits as its factorization.

101222222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490421478.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 101222222021 its reverse (120222222101), we get a palindrome (221444444122).

The spelling of 101222222021 in words is "one hundred one billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-one".