20010011202120 has 256 divisors, whose sum is σ = 62515979366400. Its totient is φ = 5117538728960.

The previous prime is 20010011202113. The next prime is 20010011202187. The reversal of 20010011202120 is 2120211001002.

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 = 20010011202096 and 20010011202105.

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, 878121367 + ... + 878144153.

It is an arithmetic number, because the mean of its divisors is an integer number (244203044400).

Almost surely, 2^{20010011202120} is an apocalyptic number.

20010011202120 is a gapful number since it is divisible by the number (20) 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 20010011202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31257989683200).

20010011202120 is an abundant number, since it is smaller than the sum of its proper divisors (42505968164280).

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

20010011202120 is a wasteful number, since it uses less digits than its factorization.

20010011202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24508 (or 24504 counting only the distinct ones).

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

Adding to 20010011202120 its reverse (2120211001002), we get a palindrome (22130222203122).

The spelling of 20010011202120 in words is "twenty trillion, ten billion, eleven million, two hundred two thousand, one hundred twenty".