2121023210201 has 16 divisors (see below), whose sum is σ = 2427318351360. Its totient is φ = 1815551505600.

The previous prime is 2121023210197. The next prime is 2121023210231. The reversal of 2121023210201 is 1020123201212.

It is not a de Polignac number, because 2121023210201 - 2² = 2121023210197 is a prime.

It is a super-2 number, since 2×2121023210201² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121023210201.

It is not an unprimeable number, because it can be changed into a prime (2121023210231) 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, 97727651 + ... + 97749351.

It is an arithmetic number, because the mean of its divisors is an integer number (151707396960).

Almost surely, 2^{2121023210201} is an apocalyptic number.

It is an amenable number.

2121023210201 is a deficient number, since it is larger than the sum of its proper divisors (306295141159).

2121023210201 is a wasteful number, since it uses less digits than its factorization.

2121023210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40024.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2121023210201 its reverse (1020123201212), we get a palindrome (3141146411413).

The spelling of 2121023210201 in words is "two trillion, one hundred twenty-one billion, twenty-three million, two hundred ten thousand, two hundred one".