20121201013 has 16 divisors (see below), whose sum is σ = 20574731520. Its totient is φ = 19673544384.

The previous prime is 20121200989. The next prime is 20121201017. The reversal of 20121201013 is 31010212102.

It is a cyclic number.

It is not a de Polignac number, because 20121201013 - 2¹³ = 20121192821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121200984 and 20121201002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121201017) 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, 3770295 + ... + 3775627.

It is an arithmetic number, because the mean of its divisors is an integer number (1285920720).

Almost surely, 2^20121201013 is an apocalyptic number.

It is an amenable number.

20121201013 is a deficient number, since it is larger than the sum of its proper divisors (453530507).

20121201013 is a wasteful number, since it uses less digits than its factorization.

20121201013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20121201013 its reverse (31010212102), we get a palindrome (51131413115).

The spelling of 20121201013 in words is "twenty billion, one hundred twenty-one million, two hundred one thousand, thirteen".