212110022021 has 8 divisors (see below), whose sum is σ = 216103855200. Its totient is φ = 208129480560.

The previous prime is 212110021999. The next prime is 212110022051. The reversal of 212110022021 is 120220011212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212110022021 is a prime.

It is a super-2 number, since 2×212110022021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212110021987 and 212110022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110022051) 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, 3290711 + ... + 3354548.

It is an arithmetic number, because the mean of its divisors is an integer number (27012981900).

Almost surely, 2^212110022021 is an apocalyptic number.

It is an amenable number.

212110022021 is a deficient number, since it is larger than the sum of its proper divisors (3993833179).

212110022021 is an equidigital number, since it uses as much as digits as its factorization.

212110022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645859.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212110022021 its reverse (120220011212), we get a palindrome (332330033233).

The spelling of 212110022021 in words is "two hundred twelve billion, one hundred ten million, twenty-two thousand, twenty-one".