2121210012201 has 24 divisors (see below), whose sum is σ = 3292200602784. Its totient is φ = 1211324002560.

The previous prime is 2121210012139. The next prime is 2121210012221. The reversal of 2121210012201 is 1022100121212.

It is not a de Polignac number, because 2121210012201 - 2¹³ = 2121210004009 is a prime.

It is a super-3 number, since 3×2121210012201³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121210012221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4513480 + ... + 4961241.

It is an arithmetic number, because the mean of its divisors is an integer number (137175025116).

Almost surely, 2^{2121210012201} is an apocalyptic number.

2121210012201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2121210012201 is a deficient number, since it is larger than the sum of its proper divisors (1170990590583).

2121210012201 is a wasteful number, since it uses less digits than its factorization.

2121210012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476261 (or 9476254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121210012201 its reverse (1022100121212), we get a palindrome (3143310133413).

The spelling of 2121210012201 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, twelve thousand, two hundred one".