212421054427 has 8 divisors (see below), whose sum is σ = 215496225792. Its totient is φ = 209348197800.

The previous prime is 212421054409. The next prime is 212421054451. The reversal of 212421054427 is 724450124212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212421054427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212421054392 and 212421054401.

It is not an unprimeable number, because it can be changed into a prime (212425054427) 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, 393393 + ... + 761314.

It is an arithmetic number, because the mean of its divisors is an integer number (26937028224).

Almost surely, 2^212421054427 is an apocalyptic number.

212421054427 is a deficient number, since it is larger than the sum of its proper divisors (3075171365).

212421054427 is a wasteful number, since it uses less digits than its factorization.

212421054427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157369.

The product of its (nonzero) digits is 35840, while the sum is 34.

Adding to 212421054427 its reverse (724450124212), we get a palindrome (936871178639).

The spelling of 212421054427 in words is "two hundred twelve billion, four hundred twenty-one million, fifty-four thousand, four hundred twenty-seven".