212301012121 has 8 divisors (see below), whose sum is σ = 235397844288. Its totient is φ = 189836970000.

The previous prime is 212301012113. The next prime is 212301012137. The reversal of 212301012121 is 121210103212.

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 212301012121 - 2³ = 212301012113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212301012095 and 212301012104.

It is not an unprimeable number, because it can be changed into a prime (212301018121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158196805 + ... + 158198146.

It is an arithmetic number, because the mean of its divisors is an integer number (29424730536).

Almost surely, 2^212301012121 is an apocalyptic number.

It is an amenable number.

212301012121 is a deficient number, since it is larger than the sum of its proper divisors (23096832167).

212301012121 is a wasteful number, since it uses less digits than its factorization.

212301012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316395023.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212301012121 its reverse (121210103212), we get a palindrome (333511115333).

The spelling of 212301012121 in words is "two hundred twelve billion, three hundred one million, twelve thousand, one hundred twenty-one".