1001020212021 has 8 divisors (see below), whose sum is σ = 1335023104864. Its totient is φ = 667182063600.

The previous prime is 1001020212007. The next prime is 1001020212037. The reversal of 1001020212021 is 1202120201001.

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

It is not a de Polignac number, because 1001020212021 - 2⁶ = 1001020211957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001020211988 and 1001020212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020211021) 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, 41171926 + ... + 41196231.

It is an arithmetic number, because the mean of its divisors is an integer number (166877888108).

Almost surely, 2^{1001020212021} is an apocalyptic number.

It is an amenable number.

1001020212021 is a deficient number, since it is larger than the sum of its proper divisors (334002892843).

1001020212021 is an equidigital number, since it uses as much as digits as its factorization.

1001020212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82372211.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001020212021 its reverse (1202120201001), we get a palindrome (2203140413022).

The spelling of 1001020212021 in words is "one trillion, one billion, twenty million, two hundred twelve thousand, twenty-one".