20121023229 has 8 divisors (see below), whose sum is σ = 26977908960. Its totient is φ = 13339076496.

The previous prime is 20121023173. The next prime is 20121023233. The reversal of 20121023229 is 92232012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121023229 - 2¹⁹ = 20120498941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20121023199 and 20121023208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121023249) 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, 18734122 + ... + 18735195.

It is an arithmetic number, because the mean of its divisors is an integer number (3372238620).

Almost surely, 2^20121023229 is an apocalyptic number.

It is an amenable number.

20121023229 is a deficient number, since it is larger than the sum of its proper divisors (6856885731).

20121023229 is a wasteful number, since it uses less digits than its factorization.

20121023229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37469499.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 20121023229 in words is "twenty billion, one hundred twenty-one million, twenty-three thousand, two hundred twenty-nine".