10202112202021 has 8 divisors (see below), whose sum is σ = 10394663128344. Its totient is φ = 10009563432960.

The previous prime is 10202112202013. The next prime is 10202112202081. The reversal of 10202112202021 is 12020221120201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4518966117796 + 5683146084225 = 2125786^2 + 2383935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10202112202021 - 2³ = 10202112202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202112201986 and 10202112202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202112202081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11535501 + ... + 12388381.

It is an arithmetic number, because the mean of its divisors is an integer number (1299332891043).

Almost surely, 2^{10202112202021} is an apocalyptic number.

It is an amenable number.

10202112202021 is a deficient number, since it is larger than the sum of its proper divisors (192550926323).

10202112202021 is an equidigital number, since it uses as much as digits as its factorization.

10202112202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078631.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10202112202021 its reverse (12020221120201), we get a palindrome (22222333322222).

The spelling of 10202112202021 in words is "ten trillion, two hundred two billion, one hundred twelve million, two hundred two thousand, twenty-one".