10202121222020 has 96 divisors (see below), whose sum is σ = 26379106027008. Its totient is φ = 3227511785472.

The previous prime is 10202121221989. The next prime is 10202121222043. The reversal of 10202121222020 is 2022212120201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10202121222020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3435692 + ... + 5675228.

It is an arithmetic number, because the mean of its divisors is an integer number (274782354448).

Almost surely, 2^{10202121222020} is an apocalyptic number.

10202121222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10202121222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13189553013504).

10202121222020 is an abundant number, since it is smaller than the sum of its proper divisors (16176984804988).

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

10202121222020 is a wasteful number, since it uses less digits than its factorization.

10202121222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242069 (or 2242067 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10202121222020 its reverse (2022212120201), we get a palindrome (12224333342221).

The spelling of 10202121222020 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty".