2121102210201 has 32 divisors (see below), whose sum is σ = 3061192538880. Its totient is φ = 1298659835904.

The previous prime is 2121102210197. The next prime is 2121102210223. The reversal of 2121102210201 is 1020122011212.

It is not a de Polignac number, because 2121102210201 - 2² = 2121102210197 is a prime.

It is a super-2 number, since 2×2121102210201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121102210901) 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, 8283181 + ... + 8535413.

It is an arithmetic number, because the mean of its divisors is an integer number (95662266840).

Almost surely, 2^{2121102210201} is an apocalyptic number.

It is an amenable number.

2121102210201 is a deficient number, since it is larger than the sum of its proper divisors (940090328679).

2121102210201 is a wasteful number, since it uses less digits than its factorization.

2121102210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253345.

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

Adding to 2121102210201 its reverse (1020122011212), we get a palindrome (3141224221413).

The spelling of 2121102210201 in words is "two trillion, one hundred twenty-one billion, one hundred two million, two hundred ten thousand, two hundred one".