212123210221301 has 4 divisors (see below), whose sum is σ = 213128533492704. Its totient is φ = 211117886949900.

The previous prime is 212123210221259. The next prime is 212123210221331. The reversal of 212123210221301 is 103122012321212.

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 212123210221301 - 2⁴⁶ = 141754466043637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123210221331) 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, 502661635385 + ... + 502661635806.

It is an arithmetic number, because the mean of its divisors is an integer number (53282133373176).

Almost surely, 2^{212123210221301} is an apocalyptic number.

It is an amenable number.

212123210221301 is a deficient number, since it is larger than the sum of its proper divisors (1005323271403).

212123210221301 is a wasteful number, since it uses less digits than its factorization.

212123210221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005323271402.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212123210221301 its reverse (103122012321212), we get a palindrome (315245222542513).

The spelling of 212123210221301 in words is "two hundred twelve trillion, one hundred twenty-three billion, two hundred ten million, two hundred twenty-one thousand, three hundred one".