20101001010 has 32 divisors (see below), whose sum is σ = 49152640320. Its totient is φ = 5259129408.

The previous prime is 20101000981. The next prime is 20101001017. The reversal of 20101001010 is 1010010102.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a self number, because there is not a number n which added to its sum of digits gives 20101001010.

It is not an unprimeable number, because it can be changed into a prime (20101001017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6319480 + ... + 6322659.

It is an arithmetic number, because the mean of its divisors is an integer number (1536020010).

Almost surely, 2^20101001010 is an apocalyptic number.

20101001010 is an abundant number, since it is smaller than the sum of its proper divisors (29051639310).

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

20101001010 is a wasteful number, since it uses less digits than its factorization.

20101001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642202.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20101001010 its reverse (1010010102), we get a palindrome (21111011112).

The spelling of 20101001010 in words is "twenty billion, one hundred one million, one thousand, ten".