20123011211 has 8 divisors (see below), whose sum is σ = 20186051760. Its totient is φ = 20060047872.

The previous prime is 20123011199. The next prime is 20123011243. The reversal of 20123011211 is 11211032102.

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 20123011211 - 2³⁰ = 19049269387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123011261) 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, 526691 + ... + 563603.

It is an arithmetic number, because the mean of its divisors is an integer number (2523256470).

Almost surely, 2^20123011211 is an apocalyptic number.

20123011211 is a deficient number, since it is larger than the sum of its proper divisors (63040549).

20123011211 is a wasteful number, since it uses less digits than its factorization.

20123011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38605.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20123011211 its reverse (11211032102), we get a palindrome (31334043313).

The spelling of 20123011211 in words is "twenty billion, one hundred twenty-three million, eleven thousand, two hundred eleven".