120000221020021 has 8 divisors (see below), whose sum is σ = 120098341261080. Its totient is φ = 119902140876288.

The previous prime is 120000221019997. The next prime is 120000221020049. The reversal of 120000221020021 is 120020122000021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80587426702500 + 39412794317521 = 8977050^2 + 6277961^2 .

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 120000221020021 - 2²¹ = 120000218922869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120000221019983 and 120000221020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000291020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034976 + ... + 16008793.

It is an arithmetic number, because the mean of its divisors is an integer number (15012292657635).

Almost surely, 2^{120000221020021} is an apocalyptic number.

It is an amenable number.

120000221020021 is a deficient number, since it is larger than the sum of its proper divisors (98120241059).

120000221020021 is a wasteful number, since it uses less digits than its factorization.

120000221020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20048663.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120000221020021 its reverse (120020122000021), we get a palindrome (240020343020042).

The spelling of 120000221020021 in words is "one hundred twenty trillion, two hundred twenty-one million, twenty thousand, twenty-one".