2102122012 has 12 divisors (see below), whose sum is σ = 3895108560. Its totient is φ = 989233856.

The previous prime is 2102121979. The next prime is 2102122067. The reversal of 2102122012 is 2102212012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2102121983 and 2102122001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15456712 + ... + 15456847.

It is an arithmetic number, because the mean of its divisors is an integer number (324592380).

Almost surely, 2^2102122012 is an apocalyptic number.

It is an amenable number.

2102122012 is a deficient number, since it is larger than the sum of its proper divisors (1792986548).

2102122012 is a wasteful number, since it uses less digits than its factorization.

2102122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30913580 (or 30913578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2102122012 is about 45848.9041526621. The cubic root of 2102122012 is about 1281.0103538085.

Adding to 2102122012 its reverse (2102212012), we get a palindrome (4204334024).

Subtracting 2102122012 from its reverse (2102212012), we obtain a square (90000 = 300²).

The spelling of 2102122012 in words is "two billion, one hundred two million, one hundred twenty-two thousand, twelve".