212121023023211 has 8 divisors (see below), whose sum is σ = 221917998141504. Its totient is φ = 202544204649280.

The previous prime is 212121023023201. The next prime is 212121023023223. The reversal of 212121023023211 is 112320320121212.

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-212121023023211 is a prime.

It is a super-3 number, since 3×212121023023211³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212121023023201) 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, 55039184120 + ... + 55039187973.

It is an arithmetic number, because the mean of its divisors is an integer number (27739749767688).

Almost surely, 2^{212121023023211} is an apocalyptic number.

212121023023211 is a deficient number, since it is larger than the sum of its proper divisors (9796975118293).

212121023023211 is a wasteful number, since it uses less digits than its factorization.

212121023023211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110078372181.

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

Adding to 212121023023211 its reverse (112320320121212), we get a palindrome (324441343144423).

The spelling of 212121023023211 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-three million, twenty-three thousand, two hundred eleven".