212010221123 has 8 divisors (see below), whose sum is σ = 226623864096. Its totient is φ = 197846228800.

The previous prime is 212010221107. The next prime is 212010221147. The reversal of 212010221123 is 321122010212.

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 212010221123 - 2⁴ = 212010221107 is a prime.

It is a super-2 number, since 2×212010221123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212010226123) 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, 112411688 + ... + 112413573.

It is an arithmetic number, because the mean of its divisors is an integer number (28327983012).

Almost surely, 2^212010221123 is an apocalyptic number.

212010221123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212010221123 is a deficient number, since it is larger than the sum of its proper divisors (14613642973).

212010221123 is a wasteful number, since it uses less digits than its factorization.

212010221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224825325.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212010221123 its reverse (321122010212), we get a palindrome (533132231335).

The spelling of 212010221123 in words is "two hundred twelve billion, ten million, two hundred twenty-one thousand, one hundred twenty-three".