2214786421 has 6 divisors (see below), whose sum is σ = 2270124866. Its totient is φ = 2160765600.

The previous prime is 2214786407. The next prime is 2214786437. The reversal of 2214786421 is 1246874122.

It can be written as a sum of positive squares in 3 ways, for example, as 59505796 + 2155280625 = 7714^2 + 46425^2 .

It is not a de Polignac number, because 2214786421 - 2¹¹ = 2214784373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214786451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 657090 + ... + 660451.

Almost surely, 2^2214786421 is an apocalyptic number.

It is an amenable number.

2214786421 is a deficient number, since it is larger than the sum of its proper divisors (55338445).

2214786421 is an equidigital number, since it uses as much as digits as its factorization.

2214786421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317623 (or 1317582 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 2214786421 is about 47061.5174107253. The cubic root of 2214786421 is about 1303.4987450542.

The spelling of 2214786421 in words is "two billion, two hundred fourteen million, seven hundred eighty-six thousand, four hundred twenty-one".