20123212233 has 8 divisors (see below), whose sum is σ = 27997512768. Its totient is φ = 12832193264.

The previous prime is 20123212183. The next prime is 20123212243. The reversal of 20123212233 is 33221232102.

It is a happy number.

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 20123212233 - 2⁶ = 20123212169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123212243) 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, 145820310 + ... + 145820447.

It is an arithmetic number, because the mean of its divisors is an integer number (3499689096).

Almost surely, 2^20123212233 is an apocalyptic number.

20123212233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20123212233 is a deficient number, since it is larger than the sum of its proper divisors (7874300535).

20123212233 is a wasteful number, since it uses less digits than its factorization.

20123212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291640783.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20123212233 its reverse (33221232102), we get a palindrome (53344444335).

The spelling of 20123212233 in words is "twenty billion, one hundred twenty-three million, two hundred twelve thousand, two hundred thirty-three".