212014223421 has 32 divisors (see below), whose sum is σ = 379549943808. Its totient is φ = 101665160640.

The previous prime is 212014223417. The next prime is 212014223423. The reversal of 212014223421 is 124322410212.

It is not a de Polignac number, because 212014223421 - 2² = 212014223417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212014223391 and 212014223400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212014223423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35297401 + ... + 35303406.

It is an arithmetic number, because the mean of its divisors is an integer number (11860935744).

Almost surely, 2^212014223421 is an apocalyptic number.

212014223421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212014223421 is a deficient number, since it is larger than the sum of its proper divisors (167535720387).

212014223421 is a wasteful number, since it uses less digits than its factorization.

212014223421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70600841.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212014223421 its reverse (124322410212), we get a palindrome (336336633633).

The spelling of 212014223421 in words is "two hundred twelve billion, fourteen million, two hundred twenty-three thousand, four hundred twenty-one".