2102120212 has 12 divisors (see below), whose sum is σ = 3688169940. Its totient is φ = 1048357376.

The previous prime is 2102120201. The next prime is 2102120221. The reversal of 2102120212 is 2120212012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1360429456 + 741690756 = 36884^2 + 27234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102120192 and 2102120201.

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, 673933 + ... + 677044.

It is an arithmetic number, because the mean of its divisors is an integer number (307347495).

Almost surely, 2^2102120212 is an apocalyptic number.

It is an amenable number.

2102120212 is a deficient number, since it is larger than the sum of its proper divisors (1586049728).

2102120212 is a wasteful number, since it uses less digits than its factorization.

2102120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351370 (or 1351368 counting only the distinct ones).

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

The square root of 2102120212 is about 45848.8845229630. The cubic root of 2102120212 is about 1281.0099881749.

Adding to 2102120212 its reverse (2120212012), we get a palindrome (4222332224).

The spelling of 2102120212 in words is "two billion, one hundred two million, one hundred twenty thousand, two hundred twelve".