10020021112121 has 4 divisors (see below), whose sum is σ = 10020411523152. Its totient is φ = 10019630701092.

The previous prime is 10020021112093. The next prime is 10020021112169. The reversal of 10020021112121 is 12121112002001.

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 10020021112121 - 2³⁴ = 10002841242937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020021112096 and 10020021112105.

It is not an unprimeable number, because it can be changed into a prime (10020021112181) 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, 195167015 + ... + 195218348.

It is an arithmetic number, because the mean of its divisors is an integer number (2505102880788).

Almost surely, 2^{10020021112121} is an apocalyptic number.

It is an amenable number.

10020021112121 is a deficient number, since it is larger than the sum of its proper divisors (390411031).

10020021112121 is an equidigital number, since it uses as much as digits as its factorization.

10020021112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390411030.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10020021112121 its reverse (12121112002001), we get a palindrome (22141133114122).

The spelling of 10020021112121 in words is "ten trillion, twenty billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".