10202001111220 has 12 divisors (see below), whose sum is σ = 21424202333604. Its totient is φ = 4080800444480.

The previous prime is 10202001111173. The next prime is 10202001111319. The reversal of 10202001111220 is 2211110020201.

It can be written as a sum of positive squares in 2 ways, for example, as 4241342540304 + 5960658570916 = 2059452^2 + 2441446^2 .

It is a super-2 number, since 2×10202001111220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10202001111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255050027761 + ... + 255050027800.

It is an arithmetic number, because the mean of its divisors is an integer number (1785350194467).

Almost surely, 2^{10202001111220} is an apocalyptic number.

10202001111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202001111220 is an abundant number, since it is smaller than the sum of its proper divisors (11222201222384).

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

10202001111220 is a wasteful number, since it uses less digits than its factorization.

10202001111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510100055570 (or 510100055568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10202001111220 its reverse (2211110020201), we get a palindrome (12413111131421).

The spelling of 10202001111220 in words is "ten trillion, two hundred two billion, one million, one hundred eleven thousand, two hundred twenty".