201345021420 has 24 divisors (see below), whose sum is σ = 563766060144. Its totient is φ = 53692005696.

The previous prime is 201345021401. The next prime is 201345021491. The reversal of 201345021420 is 24120543102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1677875119 + ... + 1677875238.

It is an arithmetic number, because the mean of its divisors is an integer number (23490252506).

Almost surely, 2^201345021420 is an apocalyptic number.

201345021420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201345021420 is an abundant number, since it is smaller than the sum of its proper divisors (362421038724).

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

201345021420 is a wasteful number, since it uses less digits than its factorization.

201345021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355750369 (or 3355750367 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 201345021420 its reverse (24120543102), we get a palindrome (225465564522).

The spelling of 201345021420 in words is "two hundred one billion, three hundred forty-five million, twenty-one thousand, four hundred twenty".