20340123212 has 24 divisors (see below), whose sum is σ = 37719823680. Its totient is φ = 9564007680.

The previous prime is 20340123197. The next prime is 20340123233. The reversal of 20340123212 is 21232104302.

It is a super-2 number, since 2×20340123212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37787 + ... + 205202.

It is an arithmetic number, because the mean of its divisors is an integer number (1571659320).

Almost surely, 2^20340123212 is an apocalyptic number.

It is an amenable number.

20340123212 is a deficient number, since it is larger than the sum of its proper divisors (17379700468).

20340123212 is a wasteful number, since it uses less digits than its factorization.

20340123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244241 (or 244239 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20340123212 its reverse (21232104302), we get a palindrome (41572227514).

The spelling of 20340123212 in words is "twenty billion, three hundred forty million, one hundred twenty-three thousand, two hundred twelve".