20512101211013 has 8 divisors (see below), whose sum is σ = 20538394540032. Its totient is φ = 20485821529296.

The previous prime is 20512101211009. The next prime is 20512101211033. The reversal of 20512101211013 is 31011210121502.

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

It is a cyclic number.

It is not a de Polignac number, because 20512101211013 - 2² = 20512101211009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512101211003) 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, 402170 + ... + 6417627.

It is an arithmetic number, because the mean of its divisors is an integer number (2567299317504).

Almost surely, 2^{20512101211013} is an apocalyptic number.

It is an amenable number.

20512101211013 is a deficient number, since it is larger than the sum of its proper divisors (26293329019).

20512101211013 is a wasteful number, since it uses less digits than its factorization.

20512101211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823651.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 20512101211013 its reverse (31011210121502), we get a palindrome (51523311332515).

The spelling of 20512101211013 in words is "twenty trillion, five hundred twelve billion, one hundred one million, two hundred eleven thousand, thirteen".