212211011101021 has 32 divisors (see below), whose sum is σ = 225663766732800. Its totient is φ = 199211621864640.

The previous prime is 212211011100967. The next prime is 212211011101031. The reversal of 212211011101021 is 120101110112212.

It is a cyclic number.

It is not a de Polignac number, because 212211011101021 - 2⁹ = 212211011100509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212211011100986 and 212211011101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211011101031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754180860 + ... + 754462186.

It is an arithmetic number, because the mean of its divisors is an integer number (7051992710400).

Almost surely, 2^{212211011101021} is an apocalyptic number.

It is an amenable number.

212211011101021 is a deficient number, since it is larger than the sum of its proper divisors (13452755631779).

212211011101021 is a wasteful number, since it uses less digits than its factorization.

212211011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284169.

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

Adding to 212211011101021 its reverse (120101110112212), we get a palindrome (332312121213233).

The spelling of 212211011101021 in words is "two hundred twelve trillion, two hundred eleven billion, eleven million, one hundred one thousand, twenty-one".