212001212121001 has 8 divisors (see below), whose sum is σ = 213976619532000. Its totient is φ = 210032006932128.

The previous prime is 212001212120981. The next prime is 212001212121011. The reversal of 212001212121001 is 100121212100212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212001212121001 is a prime.

It is a super-2 number, since 2×212001212121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001212121011) 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, 1550486851 + ... + 1550623576.

It is an arithmetic number, because the mean of its divisors is an integer number (26747077441500).

Almost surely, 2^{212001212121001} is an apocalyptic number.

It is an amenable number.

212001212121001 is a deficient number, since it is larger than the sum of its proper divisors (1975407410999).

212001212121001 is a wasteful number, since it uses less digits than its factorization.

212001212121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101111063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212001212121001 its reverse (100121212100212), we get a palindrome (312122424221213).

The spelling of 212001212121001 in words is "two hundred twelve trillion, one billion, two hundred twelve million, one hundred twenty-one thousand, one".