2121203231301 has 32 divisors (see below), whose sum is σ = 3526809043968. Its totient is φ = 1101719687040.

The previous prime is 2121203231293. The next prime is 2121203231309. The reversal of 2121203231301 is 1031323021212.

It is an interprime number because it is at equal distance from previous prime (2121203231293) and next prime (2121203231309).

It is not a de Polignac number, because 2121203231301 - 2³ = 2121203231293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121203231309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403746 + ... + 2098908.

It is an arithmetic number, because the mean of its divisors is an integer number (110212782624).

Almost surely, 2^{2121203231301} is an apocalyptic number.

2121203231301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2121203231301 is a deficient number, since it is larger than the sum of its proper divisors (1405605812667).

2121203231301 is a wasteful number, since it uses less digits than its factorization.

2121203231301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700601.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2121203231301 its reverse (1031323021212), we get a palindrome (3152526252513).

The spelling of 2121203231301 in words is "two trillion, one hundred twenty-one billion, two hundred three million, two hundred thirty-one thousand, three hundred one".