2121021121112 has 32 divisors (see below), whose sum is σ = 4106735014800. Its totient is φ = 1026344317824.

The previous prime is 2121021121103. The next prime is 2121021121129. The reversal of 2121021121112 is 2111211201212.

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, 28245803 + ... + 28320794.

Almost surely, 2^{2121021121112} is an apocalyptic number.

It is an amenable number.

2121021121112 is a deficient number, since it is larger than the sum of its proper divisors (1985713893688).

2121021121112 is a wasteful number, since it uses less digits than its factorization.

2121021121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56566755 (or 56566751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2121021121112 its reverse (2111211201212), we get a palindrome (4232232322324).

The spelling of 2121021121112 in words is "two trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, one hundred twelve".