201001020202420 has 12 divisors (see below), whose sum is σ = 422102142425124. Its totient is φ = 80400408080960.

The previous prime is 201001020202403. The next prime is 201001020202421. The reversal of 201001020202420 is 24202020100102.

It can be written as a sum of positive squares in 2 ways, for example, as 97654358808484 + 103346661393936 = 9882022^2 + 10165956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201001020202394 and 201001020202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001020202421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025025505041 + ... + 5025025505080.

It is an arithmetic number, because the mean of its divisors is an integer number (35175178535427).

Almost surely, 2^{201001020202420} is an apocalyptic number.

201001020202420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001020202420 is an abundant number, since it is smaller than the sum of its proper divisors (221101122222704).

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

201001020202420 is a wasteful number, since it uses less digits than its factorization.

201001020202420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050051010130 (or 10050051010128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201001020202420 its reverse (24202020100102), we get a palindrome (225203040302522).

The spelling of 201001020202420 in words is "two hundred one trillion, one billion, twenty million, two hundred two thousand, four hundred twenty".