20123410021011 has 12 divisors (see below), whose sum is σ = 31709615790840. Its totient is φ = 12196006073280.

The previous prime is 20123410021007. The next prime is 20123410021027. The reversal of 20123410021011 is 11012001432102.

20123410021011 is a `hidden beast` number, since 20 + 1 + 23 + 410 + 0 + 210 + 1 + 1 = 666.

It is not a de Polignac number, because 20123410021011 - 2² = 20123410021007 is a prime.

It is a super-2 number, since 2×20123410021011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20123410021051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101633383846 + ... + 101633384043.

It is an arithmetic number, because the mean of its divisors is an integer number (2642467982570).

Almost surely, 2^{20123410021011} is an apocalyptic number.

20123410021011 is a deficient number, since it is larger than the sum of its proper divisors (11586205769829).

20123410021011 is a wasteful number, since it uses less digits than its factorization.

20123410021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203266767906 (or 203266767903 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20123410021011 its reverse (11012001432102), we get a palindrome (31135411453113).

The spelling of 20123410021011 in words is "twenty trillion, one hundred twenty-three billion, four hundred ten million, twenty-one thousand, eleven".