20011212010 has 16 divisors (see below), whose sum is σ = 36022037472. Its totient is φ = 8004072400.

The previous prime is 20011211953. The next prime is 20011212059. The reversal of 20011212010 is 1021211002.

20011212010 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20011212010² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220725 + ... + 297895.

It is an arithmetic number, because the mean of its divisors is an integer number (2251377342).

Almost surely, 2^20011212010 is an apocalyptic number.

20011212010 is a deficient number, since it is larger than the sum of its proper divisors (16010825462).

20011212010 is a wasteful number, since it uses less digits than its factorization.

20011212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103109.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011212010 its reverse (1021211002), we get a palindrome (21032423012).

The spelling of 20011212010 in words is "twenty billion, eleven million, two hundred twelve thousand, ten".