20120100012011 has 4 divisors (see below), whose sum is σ = 20120944460232. Its totient is φ = 20119255563792.

The previous prime is 20120100011951. The next prime is 20120100012119. The reversal of 20120100012011 is 11021000102102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120100012011 - 2¹⁴ = 20120099995627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120100011983 and 20120100012001.

It is not an unprimeable number, because it can be changed into a prime (20120100012911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422188370 + ... + 422236023.

It is an arithmetic number, because the mean of its divisors is an integer number (5030236115058).

Almost surely, 2^{20120100012011} is an apocalyptic number.

20120100012011 is a deficient number, since it is larger than the sum of its proper divisors (844448221).

20120100012011 is an equidigital number, since it uses as much as digits as its factorization.

20120100012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844448220.

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

Adding to 20120100012011 its reverse (11021000102102), we get a palindrome (31141100114113).

Subtracting from 20120100012011 its reverse (11021000102102), we obtain a palindrome (9099099909909).

The spelling of 20120100012011 in words is "twenty trillion, one hundred twenty billion, one hundred million, twelve thousand, eleven".