120020351021 has 8 divisors (see below), whose sum is σ = 120404427000. Its totient is φ = 119636697600.

The previous prime is 120020350973. The next prime is 120020351063. The reversal of 120020351021 is 120153020021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1384881796 + 118635469225 = 37214^2 + 344435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120020351021 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 (120020351621) 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, 468305 + ... + 677753.

It is an arithmetic number, because the mean of its divisors is an integer number (15050553375).

Almost surely, 2^120020351021 is an apocalyptic number.

It is an amenable number.

120020351021 is a deficient number, since it is larger than the sum of its proper divisors (384075979).

120020351021 is a wasteful number, since it uses less digits than its factorization.

120020351021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211279.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 120020351021 its reverse (120153020021), we get a palindrome (240173371042).

The spelling of 120020351021 in words is "one hundred twenty billion, twenty million, three hundred fifty-one thousand, twenty-one".