20120421200133 has 32 divisors (see below), whose sum is σ = 27261274764672. Its totient is φ = 13197505305600.

The previous prime is 20120421200101. The next prime is 20120421200153. The reversal of 20120421200133 is 33100212402102.

It is not a de Polignac number, because 20120421200133 - 2⁵ = 20120421200101 is a prime.

It is a super-2 number, since 2×20120421200133² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120421200153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421425643 + ... + 421473383.

It is an arithmetic number, because the mean of its divisors is an integer number (851914836396).

Almost surely, 2^{20120421200133} is an apocalyptic number.

It is an amenable number.

20120421200133 is a deficient number, since it is larger than the sum of its proper divisors (7140853564539).

20120421200133 is a wasteful number, since it uses less digits than its factorization.

20120421200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52485.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20120421200133 its reverse (33100212402102), we get a palindrome (53220633602235).

The spelling of 20120421200133 in words is "twenty trillion, one hundred twenty billion, four hundred twenty-one million, two hundred thousand, one hundred thirty-three".