10020020112121 has 4 divisors (see below), whose sum is σ = 10020254799232. Its totient is φ = 10019785425012.

The previous prime is 10020020112043. The next prime is 10020020112149. The reversal of 10020020112121 is 12121102002001.

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 10020020112121 - 2²⁷ = 10019885894393 is a prime.

It is a super-2 number, since 2×10020020112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020080112121) 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, 117279501 + ... + 117364906.

It is an arithmetic number, because the mean of its divisors is an integer number (2505063699808).

Almost surely, 2^{10020020112121} is an apocalyptic number.

It is an amenable number.

10020020112121 is a deficient number, since it is larger than the sum of its proper divisors (234687111).

10020020112121 is an equidigital number, since it uses as much as digits as its factorization.

10020020112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234687110.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10020020112121 its reverse (12121102002001), we get a palindrome (22141122114122).

The spelling of 10020020112121 in words is "ten trillion, twenty billion, twenty million, one hundred twelve thousand, one hundred twenty-one".