10020000012220 has 96 divisors (see below), whose sum is σ = 23303756500416. Its totient is φ = 3588411340800.

The previous prime is 10020000012199. The next prime is 10020000012221. The reversal of 10020000012220 is 2221000002001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10020000012197 and 10020000012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020000012221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10411830 + ... + 11333410.

It is an arithmetic number, because the mean of its divisors is an integer number (242747463546).

Almost surely, 2^{10020000012220} is an apocalyptic number.

10020000012220 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 10020000012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11651878250208).

10020000012220 is an abundant number, since it is smaller than the sum of its proper divisors (13283756488196).

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

10020000012220 is a wasteful number, since it uses less digits than its factorization.

10020000012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922351 (or 922349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10020000012220 its reverse (2221000002001), we get a palindrome (12241000014221).

The spelling of 10020000012220 in words is "ten trillion, twenty billion, twelve thousand, two hundred twenty".