212102242 has 8 divisors (see below), whose sum is σ = 347076432. Its totient is φ = 96410100.

The previous prime is 212102221. The next prime is 212102257. The reversal of 212102242 is 242201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212102242² = 89974722122853128, which contains 22 as substring.

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, 4820484 + ... + 4820527.

It is an arithmetic number, because the mean of its divisors is an integer number (43384554).

Almost surely, 2^212102242 is an apocalyptic number.

212102242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212102242 is a deficient number, since it is larger than the sum of its proper divisors (134974190).

212102242 is a wasteful number, since it uses less digits than its factorization.

212102242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9641024.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 212102242 is about 14563.7303600417. The cubic root of 212102242 is about 596.3690359729.

Adding to 212102242 its reverse (242201212), we get a palindrome (454303454).

The spelling of 212102242 in words is "two hundred twelve million, one hundred two thousand, two hundred forty-two".