212011220101001 has 4 divisors (see below), whose sum is σ = 212014126945812. Its totient is φ = 212008313256192.

The previous prime is 212011220100983. The next prime is 212011220101019. The reversal of 212011220101001 is 100101022110212.

212011220101001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (212011220100983) and next prime (212011220101019).

It can be written as a sum of positive squares in 2 ways, for example, as 104368208837776 + 107643011263225 = 10216076^2 + 10375115^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011220101001 - 2⁴⁶ = 141642475923337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212011220101601) 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, 1453313000 + ... + 1453458873.

It is an arithmetic number, because the mean of its divisors is an integer number (53003531736453).

Almost surely, 2^{212011220101001} is an apocalyptic number.

It is an amenable number.

212011220101001 is a deficient number, since it is larger than the sum of its proper divisors (2906844811).

212011220101001 is an equidigital number, since it uses as much as digits as its factorization.

212011220101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906844810.

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

Adding to 212011220101001 its reverse (100101022110212), we get a palindrome (312112242211213).

The spelling of 212011220101001 in words is "two hundred twelve trillion, eleven billion, two hundred twenty million, one hundred one thousand, one".