20310120212011 has 16 divisors (see below), whose sum is σ = 24433982732800. Its totient is φ = 16491918541248.

The previous prime is 20310120211991. The next prime is 20310120212149. The reversal of 20310120212011 is 11021202101302.

It is a cyclic number.

It is not a de Polignac number, because 20310120212011 - 2⁷ = 20310120211883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20314120212011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1987306 + ... + 6676048.

It is an arithmetic number, because the mean of its divisors is an integer number (1527123920800).

Almost surely, 2^{20310120212011} is an apocalyptic number.

20310120212011 is a deficient number, since it is larger than the sum of its proper divisors (4123862520789).

20310120212011 is a wasteful number, since it uses less digits than its factorization.

20310120212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721338.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20310120212011 its reverse (11021202101302), we get a palindrome (31331322313313).

The spelling of 20310120212011 in words is "twenty trillion, three hundred ten billion, one hundred twenty million, two hundred twelve thousand, eleven".