10202111101020 has 192 divisors, whose sum is σ = 29631792992256. Its totient is φ = 2620538956800.

The previous prime is 10202111101009. The next prime is 10202111101037. The reversal of 10202111101020 is 2010111120201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10202111100987 and 10202111101005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1291239070 + ... + 1291246970.

It is an arithmetic number, because the mean of its divisors is an integer number (154332255168).

Almost surely, 2^{10202111101020} is an apocalyptic number.

10202111101020 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 10202111101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14815896496128).

10202111101020 is an abundant number, since it is smaller than the sum of its proper divisors (19429681891236).

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

10202111101020 is a wasteful number, since it uses less digits than its factorization.

10202111101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13700 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10202111101020 its reverse (2010111120201), we get a palindrome (12212222221221).

The spelling of 10202111101020 in words is "ten trillion, two hundred two billion, one hundred eleven million, one hundred one thousand, twenty".