20121431420133 has 48 divisors (see below), whose sum is σ = 31082747544576. Its totient is φ = 12499152975360.

The previous prime is 20121431420107. The next prime is 20121431420141. The reversal of 20121431420133 is 33102413412102.

20121431420133 is a `hidden beast` number, since 2 + 0 + 1 + 21 + 431 + 4 + 201 + 3 + 3 = 666.

It is not a de Polignac number, because 20121431420133 - 2¹⁶ = 20121431354597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121431420097 and 20121431420106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121431420143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4546416 + ... + 7804662.

It is an arithmetic number, because the mean of its divisors is an integer number (647557240512).

Almost surely, 2^{20121431420133} is an apocalyptic number.

It is an amenable number.

20121431420133 is a deficient number, since it is larger than the sum of its proper divisors (10961316124443).

20121431420133 is a wasteful number, since it uses less digits than its factorization.

20121431420133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258674 (or 3258671 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 20121431420133 its reverse (33102413412102), we get a palindrome (53223844832235).

The spelling of 20121431420133 in words is "twenty trillion, one hundred twenty-one billion, four hundred thirty-one million, four hundred twenty thousand, one hundred thirty-three".