212040212 has 6 divisors (see below), whose sum is σ = 371070378. Its totient is φ = 106020104.

The previous prime is 212040203. The next prime is 212040221.

212040212 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (212040203) and next prime (212040221).

It can be written as a sum of positive squares in only one way, i.e., 139381636 + 72658576 = 11806^2 + 8524^2 .

It is a super-2 number, since 2×212040212² = 89922103010009888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26505023 + ... + 26505030.

It is an arithmetic number, because the mean of its divisors is an integer number (61845063).

Almost surely, 2^212040212 is an apocalyptic number.

It is an amenable number.

212040212 is a deficient number, since it is larger than the sum of its proper divisors (159030166).

212040212 is a wasteful number, since it uses less digits than its factorization.

212040212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53010057 (or 53010055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212040212 is about 14561.6005988353. The cubic root of 212040212 is about 596.3108936076.

The spelling of 212040212 in words is "two hundred twelve million, forty thousand, two hundred twelve".