20211223229 has 8 divisors (see below), whose sum is σ = 21277095840. Its totient is φ = 19145563056.

The previous prime is 20211223223. The next prime is 20211223231. The reversal of 20211223229 is 92232211202.

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 20211223229 - 2⁴ = 20211223213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20211223198 and 20211223207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211223223) 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, 165242 + ... + 260244.

It is an arithmetic number, because the mean of its divisors is an integer number (2659636980).

Almost surely, 2^20211223229 is an apocalyptic number.

It is an amenable number.

20211223229 is a deficient number, since it is larger than the sum of its proper divisors (1065872611).

20211223229 is a wasteful number, since it uses less digits than its factorization.

20211223229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106219.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 20211223229 in words is "twenty billion, two hundred eleven million, two hundred twenty-three thousand, two hundred twenty-nine".