2111212121201 has 8 divisors (see below), whose sum is σ = 2160397212864. Its totient is φ = 2062030990320.

The previous prime is 2111212121149. The next prime is 2111212121237. The reversal of 2111212121201 is 1021212121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111212121201 - 2¹⁴ = 2111212104817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111212121201.

It is not an unprimeable number, because it can be changed into a prime (2111212121261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102155 + ... + 2057391.

It is an arithmetic number, because the mean of its divisors is an integer number (270049651608).

Almost surely, 2^{2111212121201} is an apocalyptic number.

It is an amenable number.

2111212121201 is a deficient number, since it is larger than the sum of its proper divisors (49185091663).

2111212121201 is a wasteful number, since it uses less digits than its factorization.

2111212121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980391.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2111212121201 its reverse (1021212121112), we get a palindrome (3132424242313).

The spelling of 2111212121201 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-one thousand, two hundred one".