212021020101 has 16 divisors (see below), whose sum is σ = 309959673408. Its totient is φ = 127845312000.

The previous prime is 212021020093. The next prime is 212021020147. The reversal of 212021020101 is 101020120212.

It is not a de Polignac number, because 212021020101 - 2³ = 212021020093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021020181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16300300 + ... + 16313301.

It is an arithmetic number, because the mean of its divisors is an integer number (19372479588).

Almost surely, 2^212021020101 is an apocalyptic number.

It is an amenable number.

212021020101 is a deficient number, since it is larger than the sum of its proper divisors (97938653307).

212021020101 is a wasteful number, since it uses less digits than its factorization.

212021020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32613812.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212021020101 its reverse (101020120212), we get a palindrome (313041140313).

The spelling of 212021020101 in words is "two hundred twelve billion, twenty-one million, twenty thousand, one hundred one".