212001211122211 has 8 divisors (see below), whose sum is σ = 242318691536480. Its totient is φ = 181691628985728.

The previous prime is 212001211122119. The next prime is 212001211122221. The reversal of 212001211122211 is 112221112100212.

It is a happy number.

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 212001211122211 - 2²⁷ = 212001076904483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001211122221) 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, 1974511926 + ... + 1974619291.

It is an arithmetic number, because the mean of its divisors is an integer number (30289836442060).

Almost surely, 2^{212001211122211} is an apocalyptic number.

212001211122211 is a deficient number, since it is larger than the sum of its proper divisors (30317480414269).

212001211122211 is an equidigital number, since it uses as much as digits as its factorization.

212001211122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949138893.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212001211122211 its reverse (112221112100212), we get a palindrome (324222323222423).

The spelling of 212001211122211 in words is "two hundred twelve trillion, one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred eleven".