10121220210220 has 24 divisors (see below), whose sum is σ = 24290928504864. Its totient is φ = 3470132643456.

The previous prime is 10121220210139. The next prime is 10121220210221. The reversal of 10121220210220 is 2201202212101.

It is a happy number.

10121220210220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 10121220210194 and 10121220210203.

It is not an unprimeable number, because it can be changed into a prime (10121220210221) 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, 36147214897 + ... + 36147215176.

It is an arithmetic number, because the mean of its divisors is an integer number (1012122021036).

Almost surely, 2^{10121220210220} is an apocalyptic number.

10121220210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121220210220 is an abundant number, since it is smaller than the sum of its proper divisors (14169708294644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10121220210220 is a wasteful number, since it uses less digits than its factorization.

10121220210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72294430089 (or 72294430087 counting only the distinct ones).

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

Adding to 10121220210220 its reverse (2201202212101), we get a palindrome (12322422422321).

The spelling of 10121220210220 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, two hundred twenty".