210100220121021 has 8 divisors (see below), whose sum is σ = 294877501924320. Its totient is φ = 132694875865872.

The previous prime is 210100220120977. The next prime is 210100220121031. The reversal of 210100220121021 is 120121022001012.

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

It is not a de Polignac number, because 210100220121021 - 2⁷ = 210100220120893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100220121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842984386970 + ... + 1842984387083.

It is an arithmetic number, because the mean of its divisors is an integer number (36859687740540).

Almost surely, 2^{210100220121021} is an apocalyptic number.

It is an amenable number.

210100220121021 is a deficient number, since it is larger than the sum of its proper divisors (84777281803299).

210100220121021 is a wasteful number, since it uses less digits than its factorization.

210100220121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685968774075.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210100220121021 its reverse (120121022001012), we get a palindrome (330221242122033).

The spelling of 210100220121021 in words is "two hundred ten trillion, one hundred billion, two hundred twenty million, one hundred twenty-one thousand, twenty-one".