133451034512421 has 16 divisors (see below), whose sum is σ = 179180101800000. Its totient is φ = 88345003093248.

The previous prime is 133451034512293. The next prime is 133451034512443. The reversal of 133451034512421 is 124215430154331.

It is not a de Polignac number, because 133451034512421 - 2⁷ = 133451034512293 is a prime.

It is a super-2 number, since 2×133451034512421² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133451034512421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133451034512821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41097876 + ... + 44225981.

It is an arithmetic number, because the mean of its divisors is an integer number (11198756362500).

Almost surely, 2^{133451034512421} is an apocalyptic number.

It is an amenable number.

133451034512421 is a deficient number, since it is larger than the sum of its proper divisors (45729067287579).

133451034512421 is a wasteful number, since it uses less digits than its factorization.

133451034512421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85327508.

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 133451034512421 its reverse (124215430154331), we get a palindrome (257666464666752).

The spelling of 133451034512421 in words is "one hundred thirty-three trillion, four hundred fifty-one billion, thirty-four million, five hundred twelve thousand, four hundred twenty-one".