1971212 has 24 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 907200.

The previous prime is 1971209. The next prime is 1971241. The reversal of 1971212 is 2121791.

It is an Ulam 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, 2462 + ... + 3162.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

2^1971212 is an apocalyptic number.

It is an amenable number.

1971212 is a deficient number, since it is larger than the sum of its proper divisors (1763428).

1971212 is a wasteful number, since it uses less digits than its factorization.

1971212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 759 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 1971212 is about 1403.9985754979. The cubic root of 1971212 is about 125.3846710114.

The spelling of 1971212 in words is "one million, nine hundred seventy-one thousand, two hundred twelve".