212021121011 has 8 divisors (see below), whose sum is σ = 255063002880. Its totient is φ = 172167526728.

The previous prime is 212021121001. The next prime is 212021121047. The reversal of 212021121011 is 110121120212.

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 212021121011 - 2²⁶ = 211954012147 is a prime.

It is a super-2 number, since 2×212021121011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212021121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797071751 + ... + 797072016.

It is an arithmetic number, because the mean of its divisors is an integer number (31882875360).

Almost surely, 2^212021121011 is an apocalyptic number.

212021121011 is a deficient number, since it is larger than the sum of its proper divisors (43041881869).

212021121011 is a wasteful number, since it uses less digits than its factorization.

212021121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594143793.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212021121011 its reverse (110121120212), we get a palindrome (322142241223).

The spelling of 212021121011 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, eleven".