20121202011 has 8 divisors (see below), whose sum is σ = 27021279040. Its totient is φ = 13317629832.

The previous prime is 20121202001. The next prime is 20121202039. The reversal of 20121202011 is 11020212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20121202011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121202001) 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 7 ways as a sum of consecutive naturals, for example, 24125725 + ... + 24126558.

It is an arithmetic number, because the mean of its divisors is an integer number (3377659880).

Almost surely, 2^20121202011 is an apocalyptic number.

20121202011 is a deficient number, since it is larger than the sum of its proper divisors (6900077029).

20121202011 is a wasteful number, since it uses less digits than its factorization.

20121202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48252425.

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

Adding to 20121202011 its reverse (11020212102), we get a palindrome (31141414113).

The spelling of 20121202011 in words is "twenty billion, one hundred twenty-one million, two hundred two thousand, eleven".