120201022100021 has 8 divisors (see below), whose sum is σ = 120345135387288. Its totient is φ = 120056960448000.

The previous prime is 120201022099979. The next prime is 120201022100023. The reversal of 120201022100021 is 120001220102021.

It can be written as a sum of positive squares in 4 ways, for example, as 24084292380625 + 96116729719396 = 4907575^2 + 9803914^2 .

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-120201022100021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120201022099969 and 120201022100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201022100023) 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, 8249240 + ... + 17562801.

It is an arithmetic number, because the mean of its divisors is an integer number (15043141923411).

Almost surely, 2^{120201022100021} is an apocalyptic number.

It is an amenable number.

120201022100021 is a deficient number, since it is larger than the sum of its proper divisors (144113287267).

120201022100021 is a wasteful number, since it uses less digits than its factorization.

120201022100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25817623.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120201022100021 its reverse (120001220102021), we get a palindrome (240202242202042).

The spelling of 120201022100021 in words is "one hundred twenty trillion, two hundred one billion, twenty-two million, one hundred thousand, twenty-one".