212400101 has 8 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 202754992.

The previous prime is 212400079. The next prime is 212400103. The reversal of 212400101 is 101004212.

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

It is a cyclic number.

It is not a de Polignac number, because 212400101 - 2⁶ = 212400037 is a prime.

It is a super-2 number, since 2×212400101² = 90227605809620402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212400103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2636 + ... + 20778.

It is an arithmetic number, because the mean of its divisors is an integer number (27760320).

Almost surely, 2^212400101 is an apocalyptic number.

It is an amenable number.

212400101 is a deficient number, since it is larger than the sum of its proper divisors (9682459).

212400101 is a wasteful number, since it uses less digits than its factorization.

212400101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18675.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212400101 is about 14573.9528268758. The cubic root of 212400101 is about 596.6480693238.

Adding to 212400101 its reverse (101004212), we get a palindrome (313404313).

The spelling of 212400101 in words is "two hundred twelve million, four hundred thousand, one hundred one".