212021002231 has 8 divisors (see below), whose sum is σ = 215638664400. Its totient is φ = 208404143040.

The previous prime is 212021002213. The next prime is 212021002241. The reversal of 212021002231 is 132200120212.

It is a happy number.

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 212021002231 - 2⁹ = 212021001719 is a prime.

It is a super-2 number, since 2×212021002231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021002211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344365 + ... + 736633.

It is an arithmetic number, because the mean of its divisors is an integer number (26954833050).

Almost surely, 2^212021002231 is an apocalyptic number.

212021002231 is a deficient number, since it is larger than the sum of its proper divisors (3617662169).

212021002231 is an equidigital number, since it uses as much as digits as its factorization.

212021002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401489.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212021002231 its reverse (132200120212), we get a palindrome (344221122443).

The spelling of 212021002231 in words is "two hundred twelve billion, twenty-one million, two thousand, two hundred thirty-one".