2121021112 has 32 divisors (see below), whose sum is σ = 4548280320. Its totient is φ = 908362080.

The previous prime is 2121021103. The next prime is 2121021121. The reversal of 2121021112 is 2111201212.

It is an interprime number because it is at equal distance from previous prime (2121021103) and next prime (2121021121).

It is a junction number, because it is equal to n+sod(n) for n = 2121021092 and 2121021101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70537 + ... + 96007.

It is an arithmetic number, because the mean of its divisors is an integer number (142133760).

Almost surely, 2^2121021112 is an apocalyptic number.

It is an amenable number.

2121021112 is an abundant number, since it is smaller than the sum of its proper divisors (2427259208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121021112 is a wasteful number, since it uses less digits than its factorization.

2121021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26971 (or 26967 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2121021112 is about 46054.5449657252. The cubic root of 2121021112 is about 1284.8378750478.

Adding to 2121021112 its reverse (2111201212), we get a palindrome (4232222324).

The spelling of 2121021112 in words is "two billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".