212135401 has 8 divisors (see below), whose sum is σ = 226796544. Its totient is φ = 197716800.

The previous prime is 212135389. The next prime is 212135419. The reversal of 212135401 is 104531212.

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

It is not a de Polignac number, because 212135401 - 2²³ = 203746793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212135101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58825 + ... + 62326.

It is an arithmetic number, because the mean of its divisors is an integer number (28349568).

Almost surely, 2^212135401 is an apocalyptic number.

It is an amenable number.

212135401 is a deficient number, since it is larger than the sum of its proper divisors (14661143).

212135401 is a wasteful number, since it uses less digits than its factorization.

212135401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121271.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 212135401 is about 14564.8687258073. The cubic root of 212135401 is about 596.4001121341.

Adding to 212135401 its reverse (104531212), we get a palindrome (316666613).

The spelling of 212135401 in words is "two hundred twelve million, one hundred thirty-five thousand, four hundred one".