10020212120021 has 4 divisors (see below), whose sum is σ = 10022846941632. Its totient is φ = 10017577298412.

The previous prime is 10020212119927. The next prime is 10020212120047. The reversal of 10020212120021 is 12002121202001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10020212120021 - 2²⁶ = 10020145011157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020212119978 and 10020212120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020212120521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317405101 + ... + 1317412706.

It is an arithmetic number, because the mean of its divisors is an integer number (2505711735408).

Almost surely, 2^{10020212120021} is an apocalyptic number.

It is an amenable number.

10020212120021 is a deficient number, since it is larger than the sum of its proper divisors (2634821611).

10020212120021 is an equidigital number, since it uses as much as digits as its factorization.

10020212120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634821610.

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

Adding to 10020212120021 its reverse (12002121202001), we get a palindrome (22022333322022).

The spelling of 10020212120021 in words is "ten trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, twenty-one".