10020220123121 has 4 divisors (see below), whose sum is σ = 10791006286452. Its totient is φ = 9249433959792.

The previous prime is 10020220123097. The next prime is 10020220123141. The reversal of 10020220123121 is 12132102202001.

10020220123121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2584040175025 + 7436179948096 = 1607495^2 + 2726936^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10020220123121 is a prime.

It is a super-2 number, since 2×10020220123121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10020220123121.

It is not an unprimeable number, because it can be changed into a prime (10020220123141) 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, 385393081646 + ... + 385393081671.

It is an arithmetic number, because the mean of its divisors is an integer number (2697751571613).

Almost surely, 2^{10020220123121} is an apocalyptic number.

It is an amenable number.

10020220123121 is a deficient number, since it is larger than the sum of its proper divisors (770786163331).

10020220123121 is an equidigital number, since it uses as much as digits as its factorization.

10020220123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770786163330.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10020220123121 its reverse (12132102202001), we get a palindrome (22152322325122).

The spelling of 10020220123121 in words is "ten trillion, twenty billion, two hundred twenty million, one hundred twenty-three thousand, one hundred twenty-one".