120210101021221 has 8 divisors (see below), whose sum is σ = 127281844390680. Its totient is φ = 113138419980288.

The previous prime is 120210101021107. The next prime is 120210101021239. The reversal of 120210101021221 is 122120101012021.

It can be written as a sum of positive squares in 4 ways, for example, as 12009968100 + 120198091053121 = 109590^2 + 10963489^2 .

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 120210101021221 - 2⁷ = 120210101021093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120210101021195 and 120210101021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210101021261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11582026 + ... + 19353643.

It is an arithmetic number, because the mean of its divisors is an integer number (15910230548835).

Almost surely, 2^{120210101021221} is an apocalyptic number.

It is an amenable number.

120210101021221 is a deficient number, since it is larger than the sum of its proper divisors (7071743369459).

120210101021221 is a wasteful number, since it uses less digits than its factorization.

120210101021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31164263.

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

Adding to 120210101021221 its reverse (122120101012021), we get a palindrome (242330202033242).

The spelling of 120210101021221 in words is "one hundred twenty trillion, two hundred ten billion, one hundred one million, twenty-one thousand, two hundred twenty-one".