212200102021 has 4 divisors (see below), whose sum is σ = 213726721600. Its totient is φ = 210673482444.

The previous prime is 212200102003. The next prime is 212200102061. The reversal of 212200102021 is 120201002212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212200102021 - 2¹⁷ = 212199970949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212200101992 and 212200102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200102061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763309581 + ... + 763309858.

It is an arithmetic number, because the mean of its divisors is an integer number (53431680400).

Almost surely, 2^212200102021 is an apocalyptic number.

It is an amenable number.

212200102021 is a deficient number, since it is larger than the sum of its proper divisors (1526619579).

212200102021 is a wasteful number, since it uses less digits than its factorization.

212200102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526619578.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212200102021 its reverse (120201002212), we get a palindrome (332401104233).

The spelling of 212200102021 in words is "two hundred twelve billion, two hundred million, one hundred two thousand, twenty-one".