2121121012 has 24 divisors (see below), whose sum is σ = 3923575040. Its totient is φ = 1000563840.

The previous prime is 2121120997. The next prime is 2121121049. The reversal of 2121121012 is 2101211212.

It is a junction number, because it is equal to n+sod(n) for n = 2121120983 and 2121121001.

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, 39588 + ... + 76219.

Almost surely, 2^2121121012 is an apocalyptic number.

It is an amenable number.

2121121012 is a deficient number, since it is larger than the sum of its proper divisors (1802454028).

2121121012 is a wasteful number, since it uses less digits than its factorization.

2121121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116071 (or 116069 counting only the distinct ones).

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

The square root of 2121121012 is about 46055.6295364638. The cubic root of 2121121012 is about 1284.8580466667.

Adding to 2121121012 its reverse (2101211212), we get a palindrome (4222332224).

The spelling of 2121121012 in words is "two billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".