2102121211201 has 16 divisors (see below), whose sum is σ = 2319961979520. Its totient is φ = 1888831141120.

The previous prime is 2102121211163. The next prime is 2102121211237. The reversal of 2102121211201 is 1021121212012.

It is not a de Polignac number, because 2102121211201 - 2⁹ = 2102121210689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102121211901) 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, 1909150 + ... + 2801623.

It is an arithmetic number, because the mean of its divisors is an integer number (144997623720).

Almost surely, 2^{2102121211201} is an apocalyptic number.

It is an amenable number.

2102121211201 is a deficient number, since it is larger than the sum of its proper divisors (217840768319).

2102121211201 is a wasteful number, since it uses less digits than its factorization.

2102121211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711256.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2102121211201 its reverse (1021121212012), we get a palindrome (3123242423213).

The spelling of 2102121211201 in words is "two trillion, one hundred two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred one".