10120220111021 has 4 divisors (see below), whose sum is σ = 10224552277212. Its totient is φ = 10015887944832.

The previous prime is 10120220110921. The next prime is 10120220111063. The reversal of 10120220111021 is 12011102202101.

10120220111021 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 1328461402921 + 8791758708100 = 1152589^2 + 2965090^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120220111021 - 2³⁴ = 10103040241837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10120220110987 and 10120220111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120220111821) 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, 52166082950 + ... + 52166083143.

It is an arithmetic number, because the mean of its divisors is an integer number (2556138069303).

Almost surely, 2^{10120220111021} is an apocalyptic number.

It is an amenable number.

10120220111021 is a deficient number, since it is larger than the sum of its proper divisors (104332166191).

10120220111021 is an equidigital number, since it uses as much as digits as its factorization.

10120220111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104332166190.

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

Adding to 10120220111021 its reverse (12011102202101), we get a palindrome (22131322313122).

The spelling of 10120220111021 in words is "ten trillion, one hundred twenty billion, two hundred twenty million, one hundred eleven thousand, twenty-one".