7121012 has 6 divisors (see below), whose sum is σ = 12461778. Its totient is φ = 3560504.

The previous prime is 7120999. The next prime is 7121021. The reversal of 7121012 is 2101217.

It can be written as a sum of positive squares in only one way, i.e., 7107556 + 13456 = 2666^2 + 116^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890123 + ... + 890130.

It is an arithmetic number, because the mean of its divisors is an integer number (2076963).

Almost surely, 2^7121012 is an apocalyptic number.

It is an amenable number.

7121012 is a deficient number, since it is larger than the sum of its proper divisors (5340766).

7121012 is a wasteful number, since it uses less digits than its factorization.

7121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780257 (or 1780255 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 7121012 is about 2668.5224376048. The cubic root of 7121012 is about 192.3891485243.

Adding to 7121012 its reverse (2101217), we get a palindrome (9222229).

The spelling of 7121012 in words is "seven million, one hundred twenty-one thousand, twelve".