20123311201 has 16 divisors (see below), whose sum is σ = 24187880448. Its totient is φ = 16377192000.

The previous prime is 20123311193. The next prime is 20123311237. The reversal of 20123311201 is 10211332102.

It is a cyclic number.

It is not a de Polignac number, because 20123311201 - 2³ = 20123311193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123311001) 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, 863350 + ... + 886351.

It is an arithmetic number, because the mean of its divisors is an integer number (1511742528).

Almost surely, 2^20123311201 is an apocalyptic number.

It is an amenable number.

20123311201 is a deficient number, since it is larger than the sum of its proper divisors (4064569247).

20123311201 is a wasteful number, since it uses less digits than its factorization.

20123311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749792.

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

Adding to 20123311201 its reverse (10211332102), we get a palindrome (30334643303).

The spelling of 20123311201 in words is "twenty billion, one hundred twenty-three million, three hundred eleven thousand, two hundred one".