20121402233205 has 96 divisors (see below), whose sum is σ = 42977949880320. Its totient is φ = 8480446087680.

The previous prime is 20121402233147. The next prime is 20121402233221. The reversal of 20121402233205 is 50233220412102.

20121402233205 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 1 + 402 + 233 + 20 + 5 = 666.

It is not a de Polignac number, because 20121402233205 - 2¹² = 20121402229109 is a prime.

It is a super-2 number, since 2×20121402233205² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 369516 + ... + 6354474.

It is an arithmetic number, because the mean of its divisors is an integer number (447686977920).

Almost surely, 2^{20121402233205} is an apocalyptic number.

It is an amenable number.

20121402233205 is an abundant number, since it is smaller than the sum of its proper divisors (22856547647115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121402233205 is a wasteful number, since it uses less digits than its factorization.

20121402233205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985811 (or 5985808 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20121402233205 its reverse (50233220412102), we get a palindrome (70354622645307).

The spelling of 20121402233205 in words is "twenty trillion, one hundred twenty-one billion, four hundred two million, two hundred thirty-three thousand, two hundred five".