20120011001010 has 128 divisors (see below), whose sum is σ = 54169638336000. Its totient is φ = 5313752430336.

The previous prime is 20120011000981. The next prime is 20120011001099. The reversal of 20120011001010 is 1010011002102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20120011000983 and 20120011001001.

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, 66626019 + ... + 66927321.

It is an arithmetic number, because the mean of its divisors is an integer number (423200299500).

Almost surely, 2^{20120011001010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120011001010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27084819168000).

20120011001010 is an abundant number, since it is smaller than the sum of its proper divisors (34049627334990).

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

20120011001010 is a wasteful number, since it uses less digits than its factorization.

20120011001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303697 (or 303691 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20120011001010 its reverse (1010011002102), we get a palindrome (21130022003112).

The spelling of 20120011001010 in words is "twenty trillion, one hundred twenty billion, eleven million, one thousand, ten".