2212100012121 has 8 divisors (see below), whose sum is σ = 2949486800064. Its totient is φ = 1474723282800.

The previous prime is 2212100012093. The next prime is 2212100012167. The reversal of 2212100012121 is 1212100012122.

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

It is not a de Polignac number, because 2212100012121 - 2¹⁰ = 2212100011097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212100012121.

It is not an unprimeable number, because it can be changed into a prime (2212100012021) 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, 1985605 + ... + 2892546.

It is an arithmetic number, because the mean of its divisors is an integer number (368685850008).

Almost surely, 2^{2212100012121} is an apocalyptic number.

It is an amenable number.

2212100012121 is a deficient number, since it is larger than the sum of its proper divisors (737386787943).

2212100012121 is a wasteful number, since it uses less digits than its factorization.

2212100012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029311.

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

Adding to 2212100012121 its reverse (1212100012122), we get a palindrome (3424200024243).

Subtracting from 2212100012121 its reverse (1212100012122), we obtain a palindrome (999999999999).

It can be divided in two parts, 221210001 and 2121, that added together give a palindrome (221212122).

The spelling of 2212100012121 in words is "two trillion, two hundred twelve billion, one hundred million, twelve thousand, one hundred twenty-one".