212112001121 has 4 divisors (see below), whose sum is σ = 215277851952. Its totient is φ = 208946150292.

The previous prime is 212112001093. The next prime is 212112001169. The reversal of 212112001121 is 121100211212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212112001121 - 2¹⁴ = 212111984737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212112001096 and 212112001105.

It is not an unprimeable number, because it can be changed into a prime (212112001021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582925315 + ... + 1582925448.

It is an arithmetic number, because the mean of its divisors is an integer number (53819462988).

Almost surely, 2^212112001121 is an apocalyptic number.

It is an amenable number.

212112001121 is a deficient number, since it is larger than the sum of its proper divisors (3165850831).

212112001121 is an equidigital number, since it uses as much as digits as its factorization.

212112001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165850830.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212112001121 its reverse (121100211212), we get a palindrome (333212212333).

The spelling of 212112001121 in words is "two hundred twelve billion, one hundred twelve million, one thousand, one hundred twenty-one".