4214197370921 has 2 divisors, whose sum is σ = 4214197370922. Its totient is φ = 4214197370920.

The previous prime is 4214197370879. The next prime is 4214197370939. The reversal of 4214197370921 is 1290737914124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3638327353600 + 575870017321 = 1907440^2 + 758861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4214197370921 - 2¹⁰ = 4214197369897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4214197370921.

It is not a weakly prime, because it can be changed into another prime (4214197370321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2107098685460 + 2107098685461.

It is an arithmetic number, because the mean of its divisors is an integer number (2107098685461).

Almost surely, 2^{4214197370921} is an apocalyptic number.

It is an amenable number.

4214197370921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4214197370921 is an equidigital number, since it uses as much as digits as its factorization.

4214197370921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 4214197370921 in words is "four trillion, two hundred fourteen billion, one hundred ninety-seven million, three hundred seventy thousand, nine hundred twenty-one".