2112102021101 has 4 divisors (see below), whose sum is σ = 2112865342272. Its totient is φ = 2111338699932.

The previous prime is 2112102021097. The next prime is 2112102021109. The reversal of 2112102021101 is 1011202012112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112102021101 - 2² = 2112102021097 is a prime.

It is a super-3 number, since 3×2112102021101³ (a number of 38 digits) contains 333 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 (2112102021109) 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, 381656435 + ... + 381661968.

It is an arithmetic number, because the mean of its divisors is an integer number (528216335568).

Almost surely, 2^{2112102021101} is an apocalyptic number.

It is an amenable number.

2112102021101 is a deficient number, since it is larger than the sum of its proper divisors (763321171).

2112102021101 is an equidigital number, since it uses as much as digits as its factorization.

2112102021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763321170.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2112102021101 its reverse (1011202012112), we get a palindrome (3123304033213).

The spelling of 2112102021101 in words is "two trillion, one hundred twelve billion, one hundred two million, twenty-one thousand, one hundred one".