202012210001021 has 8 divisors (see below), whose sum is σ = 230874993321984. Its totient is φ = 173150400724560.

The previous prime is 202012210000987. The next prime is 202012210001023. The reversal of 202012210001021 is 120100012210202.

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

It is not a de Polignac number, because 202012210001021 - 2¹⁰ = 202012209999997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202012210000987 and 202012210001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012210001023) 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, 243066650 + ... + 243896331.

It is an arithmetic number, because the mean of its divisors is an integer number (28859374165248).

Almost surely, 2^{202012210001021} is an apocalyptic number.

It is an amenable number.

202012210001021 is a deficient number, since it is larger than the sum of its proper divisors (28862783320963).

202012210001021 is an equidigital number, since it uses as much as digits as its factorization.

202012210001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487022251.

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

Adding to 202012210001021 its reverse (120100012210202), we get a palindrome (322112222211223).

The spelling of 202012210001021 in words is "two hundred two trillion, twelve billion, two hundred ten million, one thousand, twenty-one".