212120001121 has 8 divisors (see below), whose sum is σ = 242715293120. Its totient is φ = 181597817808.

The previous prime is 212120001101. The next prime is 212120001133. The reversal of 212120001121 is 121100021212.

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 212120001121 - 2¹⁵ = 212119968353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212120001101) 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, 18270951 + ... + 18282556.

It is an arithmetic number, because the mean of its divisors is an integer number (30339411640).

Almost surely, 2^212120001121 is an apocalyptic number.

It is an amenable number.

212120001121 is a deficient number, since it is larger than the sum of its proper divisors (30595291999).

212120001121 is an equidigital number, since it uses as much as digits as its factorization.

212120001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36554343.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212120001121 its reverse (121100021212), we get a palindrome (333220022333).

The spelling of 212120001121 in words is "two hundred twelve billion, one hundred twenty million, one thousand, one hundred twenty-one".