145204213212 has 18 divisors (see below), whose sum is σ = 367043983488. Its totient is φ = 48401404392.

The previous prime is 145204213211. The next prime is 145204213243. The reversal of 145204213212 is 212312402541.

145204213212 is a `hidden beast` number, since 1 + 4 + 5 + 20 + 421 + 3 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145204213211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2016725148 + ... + 2016725219.

It is an arithmetic number, because the mean of its divisors is an integer number (20391332416).

Almost surely, 2^145204213212 is an apocalyptic number.

145204213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145204213212 is an abundant number, since it is smaller than the sum of its proper divisors (221839770276).

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

145204213212 is a wasteful number, since it uses less digits than its factorization.

145204213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033450377 (or 4033450372 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 145204213212 its reverse (212312402541), we get a palindrome (357516615753).

The spelling of 145204213212 in words is "one hundred forty-five billion, two hundred four million, two hundred thirteen thousand, two hundred twelve".