20123211013 has 8 divisors (see below), whose sum is σ = 20343565440. Its totient is φ = 19903270800.

The previous prime is 20123210957. The next prime is 20123211019. The reversal of 20123211013 is 31011232102.

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-20123211013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123211019) 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, 5353 + ... + 200686.

It is an arithmetic number, because the mean of its divisors is an integer number (2542945680).

Almost surely, 2^20123211013 is an apocalyptic number.

It is an amenable number.

20123211013 is a deficient number, since it is larger than the sum of its proper divisors (220354427).

20123211013 is a wasteful number, since it uses less digits than its factorization.

20123211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207107.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20123211013 its reverse (31011232102), we get a palindrome (51134443115).

The spelling of 20123211013 in words is "twenty billion, one hundred twenty-three million, two hundred eleven thousand, thirteen".