10202122021020 has 216 divisors, whose sum is σ = 30223345958064. Its totient is φ = 2570996173824.

The previous prime is 10202122021009. The next prime is 10202122021099. The reversal of 10202122021020 is 2012022120201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10888069992 + ... + 10888070928.

It is an arithmetic number, because the mean of its divisors is an integer number (139922897954).

Almost surely, 2^{10202122021020} is an apocalyptic number.

10202122021020 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 10202122021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15111672979032).

10202122021020 is an abundant number, since it is smaller than the sum of its proper divisors (20021223937044).

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

10202122021020 is an equidigital number, since it uses as much as digits as its factorization.

10202122021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10202122021020 its reverse (2012022120201), we get a palindrome (12214144141221).

The spelling of 10202122021020 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, twenty-one thousand, twenty".