2112110101021 has 8 divisors (see below), whose sum is σ = 2143926099200. Its totient is φ = 2080421113680.

The previous prime is 2112110100953. The next prime is 2112110101081. The reversal of 2112110101021 is 1201010112112.

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 a de Polignac number, because none of the positive numbers 2^k-2112110101021 is a prime.

It is a super-2 number, since 2×2112110101021² (a number of 25 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 = 2112110100992 and 2112110101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112110101081) 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, 31719201 + ... + 31785718.

It is an arithmetic number, because the mean of its divisors is an integer number (267990762400).

Almost surely, 2^{2112110101021} is an apocalyptic number.

It is an amenable number.

2112110101021 is a deficient number, since it is larger than the sum of its proper divisors (31815998179).

2112110101021 is an equidigital number, since it uses as much as digits as its factorization.

2112110101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63505419.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2112110101021 its reverse (1201010112112), we get a palindrome (3313120213133).

The spelling of 2112110101021 in words is "two trillion, one hundred twelve billion, one hundred ten million, one hundred one thousand, twenty-one".