212989212 has 18 divisors (see below), whose sum is σ = 538389488. Its totient is φ = 70996392.

The previous prime is 212989211. The next prime is 212989213.

212989212 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (212989211) and next prime (212989213).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5916367 = 212989212 / (2 + 1 + 2 + 9 + 8 + 9 + 2 + 1 + 2).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212989211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2958148 + ... + 2958219.

Almost surely, 2^212989212 is an apocalyptic number.

It is an amenable number.

212989212 is an abundant number, since it is smaller than the sum of its proper divisors (325400276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212989212 is a wasteful number, since it uses less digits than its factorization.

212989212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916377 (or 5916372 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 212989212 is about 14594.1499238565. The cubic root of 212989212 is about 597.1991793499.

The spelling of 212989212 in words is "two hundred twelve million, nine hundred eighty-nine thousand, two hundred twelve".