101021002222221 has 40 divisors (see below), whose sum is σ = 156116117124000. Its totient is φ = 65023147314720.

The previous prime is 101021002222213. The next prime is 101021002222237. The reversal of 101021002222221 is 122222200120101.

It is a happy number.

101021002222221 is a `hidden beast` number, since 1 + 0 + 10 + 210 + 0 + 2 + 222 + 221 = 666.

It is not a de Polignac number, because 101021002222221 - 2³ = 101021002222213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101021002222194 and 101021002222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021002220221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83727766 + ... + 84925736.

It is an arithmetic number, because the mean of its divisors is an integer number (3902902928100).

Almost surely, 2^{101021002222221} is an apocalyptic number.

It is an amenable number.

101021002222221 is a deficient number, since it is larger than the sum of its proper divisors (55095114901779).

101021002222221 is a wasteful number, since it uses less digits than its factorization.

101021002222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233911 (or 1233902 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 101021002222221 its reverse (122222200120101), we get a palindrome (223243202342322).

The spelling of 101021002222221 in words is "one hundred one trillion, twenty-one billion, two million, two hundred twenty-two thousand, two hundred twenty-one".