2101201420 has 24 divisors (see below), whose sum is σ = 4428126864. Its totient is φ = 837508416.

The previous prime is 2101201381. The next prime is 2101201433. The reversal of 2101201420 is 241021012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101201420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179959 + ... + 191278.

It is an arithmetic number, because the mean of its divisors is an integer number (184505286).

Almost surely, 2^2101201420 is an apocalyptic number.

2101201420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101201420 is an abundant number, since it is smaller than the sum of its proper divisors (2326925444).

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

2101201420 is a wasteful number, since it uses less digits than its factorization.

2101201420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371529 (or 371527 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2101201420 is about 45838.8636421105. The cubic root of 2101201420 is about 1280.8233269108.

Adding to 2101201420 its reverse (241021012), we get a palindrome (2342222432).

The spelling of 2101201420 in words is "two billion, one hundred one million, two hundred one thousand, four hundred twenty".