212200020021 has 32 divisors (see below), whose sum is σ = 328927039488. Its totient is φ = 120397154240.

The previous prime is 212200019951. The next prime is 212200020061. The reversal of 212200020021 is 120020002212.

It is not a de Polignac number, because 212200020021 - 2¹¹ = 212200017973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212200019979 and 212200020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200020061) 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 31 ways as a sum of consecutive naturals, for example, 2938566 + ... + 3009911.

It is an arithmetic number, because the mean of its divisors is an integer number (10278969984).

Almost surely, 2^212200020021 is an apocalyptic number.

It is an amenable number.

212200020021 is a deficient number, since it is larger than the sum of its proper divisors (116727019467).

212200020021 is a wasteful number, since it uses less digits than its factorization.

212200020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5948561.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 212200020021 its reverse (120020002212), we get a palindrome (332220022233).

The spelling of 212200020021 in words is "two hundred twelve billion, two hundred million, twenty thousand, twenty-one".