2112213110021 has 8 divisors (see below), whose sum is σ = 2413976727744. Its totient is φ = 1810454214240.

The previous prime is 2112213110011. The next prime is 2112213110027. The reversal of 2112213110021 is 1200113122112.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2112213110021 is a prime.

It is a super-2 number, since 2×2112213110021² (a number of 25 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 (2112213110027) 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, 163535 + ... + 2061836.

It is an arithmetic number, because the mean of its divisors is an integer number (301747090968).

Almost surely, 2^{2112213110021} is an apocalyptic number.

It is an amenable number.

2112213110021 is a deficient number, since it is larger than the sum of its proper divisors (301763617723).

2112213110021 is a wasteful number, since it uses less digits than its factorization.

2112213110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360971.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2112213110021 its reverse (1200113122112), we get a palindrome (3312326232133).

The spelling of 2112213110021 in words is "two trillion, one hundred twelve billion, two hundred thirteen million, one hundred ten thousand, twenty-one".