212401340 has 12 divisors (see below), whose sum is σ = 446042856. Its totient is φ = 84960528.

The previous prime is 212401339. The next prime is 212401351. The reversal of 212401340 is 43104212.

It is a super-2 number, since 2×212401340² = 90228658467591200, which contains 22 as substring.

It is a congruent number.

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, 5310014 + ... + 5310053.

It is an arithmetic number, because the mean of its divisors is an integer number (37170238).

Almost surely, 2^212401340 is an apocalyptic number.

212401340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212401340 is an abundant number, since it is smaller than the sum of its proper divisors (233641516).

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

212401340 is a wasteful number, since it uses less digits than its factorization.

212401340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620076 (or 10620074 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212401340 is about 14573.9953341560. The cubic root of 212401340 is about 596.6492294701.

Adding to 212401340 its reverse (43104212), we get a palindrome (255505552).

The spelling of 212401340 in words is "two hundred twelve million, four hundred one thousand, three hundred forty".