203100201421 has 16 divisors (see below), whose sum is σ = 224658509824. Its totient is φ = 182390854464.

The previous prime is 203100201413. The next prime is 203100201481. The reversal of 203100201421 is 124102001302.

It is not a de Polignac number, because 203100201421 - 2³ = 203100201413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203100201395 and 203100201404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203100201401) 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, 6510166 + ... + 6541288.

It is an arithmetic number, because the mean of its divisors is an integer number (14041156864).

Almost surely, 2^203100201421 is an apocalyptic number.

It is an amenable number.

203100201421 is a deficient number, since it is larger than the sum of its proper divisors (21558308403).

203100201421 is a wasteful number, since it uses less digits than its factorization.

203100201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44740.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 203100201421 its reverse (124102001302), we get a palindrome (327202202723).

The spelling of 203100201421 in words is "two hundred three billion, one hundred million, two hundred one thousand, four hundred twenty-one".