10201220101020 has 384 divisors, whose sum is σ = 33231551754240. Its totient is φ = 2317203947520.

The previous prime is 10201220101003. The next prime is 10201220101031. The reversal of 10201220101020 is 2010102210201.

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 = 10201220100987 and 10201220101005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 708066657 + ... + 708081063.

It is an arithmetic number, because the mean of its divisors is an integer number (86540499360).

Almost surely, 2^{10201220101020} is an apocalyptic number.

10201220101020 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 10201220101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16615775877120).

10201220101020 is an abundant number, since it is smaller than the sum of its proper divisors (23030331653220).

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

10201220101020 is a wasteful number, since it uses less digits than its factorization.

10201220101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15845 (or 15843 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10201220101020 its reverse (2010102210201), we get a palindrome (12211322311221).

The spelling of 10201220101020 in words is "ten trillion, two hundred one billion, two hundred twenty million, one hundred one thousand, twenty".