10201221020120 has 128 divisors (see below), whose sum is σ = 26075036332800. Its totient is φ = 3560719689216.

The previous prime is 10201221020119. The next prime is 10201221020143. The reversal of 10201221020120 is 2102012210201.

It is a junction number, because it is equal to n+sod(n) for n = 10201221020095 and 10201221020104.

It is a congruent number.

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, 3508487 + ... + 5719433.

It is an arithmetic number, because the mean of its divisors is an integer number (203711221350).

Almost surely, 2^{10201221020120} is an apocalyptic number.

10201221020120 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 10201221020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13037518166400).

10201221020120 is an abundant number, since it is smaller than the sum of its proper divisors (15873815312680).

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

10201221020120 is a wasteful number, since it uses less digits than its factorization.

10201221020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211457 (or 2211453 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10201221020120 its reverse (2102012210201), we get a palindrome (12303233230321).

The spelling of 10201221020120 in words is "ten trillion, two hundred one billion, two hundred twenty-one million, twenty thousand, one hundred twenty".