212201110002021 has 16 divisors (see below), whose sum is σ = 342374900171904. Its totient is φ = 114124966723584.

The previous prime is 212201110001977. The next prime is 212201110002031. The reversal of 212201110002021 is 120200011102212.

It is not a de Polignac number, because 212201110002021 - 2⁷ = 212201110001893 is a prime.

It is a super-2 number, since 2×212201110002021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201110002031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297200433820 + ... + 297200434533.

It is an arithmetic number, because the mean of its divisors is an integer number (21398431260744).

Almost surely, 2^{212201110002021} is an apocalyptic number.

212201110002021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212201110002021 is a deficient number, since it is larger than the sum of its proper divisors (130173790169883).

212201110002021 is a wasteful number, since it uses less digits than its factorization.

212201110002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594400868380.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212201110002021 its reverse (120200011102212), we get a palindrome (332401121104233).

The spelling of 212201110002021 in words is "two hundred twelve trillion, two hundred one billion, one hundred ten million, two thousand, twenty-one".