20012120001011 has 8 divisors (see below), whose sum is σ = 20890830562560. Its totient is φ = 19134127638472.

The previous prime is 20012120000981. The next prime is 20012120001053. The reversal of 20012120001011 is 11010002121002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20012120001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012120000983 and 20012120001001.

It is not an unprimeable number, because it can be changed into a prime (20012420001011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179492801 + ... + 179604258.

It is an arithmetic number, because the mean of its divisors is an integer number (2611353820320).

Almost surely, 2^{20012120001011} is an apocalyptic number.

20012120001011 is a deficient number, since it is larger than the sum of its proper divisors (878710561549).

20012120001011 is a wasteful number, since it uses less digits than its factorization.

20012120001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359099505.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20012120001011 its reverse (11010002121002), we get a palindrome (31022122122013).

The spelling of 20012120001011 in words is "twenty trillion, twelve billion, one hundred twenty million, one thousand, eleven".