2212021003123 has 4 divisors (see below), whose sum is σ = 2212319247160. Its totient is φ = 2211722759088.

The previous prime is 2212021003111. The next prime is 2212021003147. The reversal of 2212021003123 is 3213001202122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2212021003123 - 2²⁵ = 2211987448691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212021003123.

It is not an unprimeable number, because it can be changed into a prime (2212021003523) 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, 149110893 + ... + 149125726.

It is an arithmetic number, because the mean of its divisors is an integer number (553079811790).

Almost surely, 2^{2212021003123} is an apocalyptic number.

2212021003123 is a deficient number, since it is larger than the sum of its proper divisors (298244037).

2212021003123 is an equidigital number, since it uses as much as digits as its factorization.

2212021003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298244036.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2212021003123 its reverse (3213001202122), we get a palindrome (5425022205245).

The spelling of 2212021003123 in words is "two trillion, two hundred twelve billion, twenty-one million, three thousand, one hundred twenty-three".