421032221210357 has 2 divisors, whose sum is σ = 421032221210358. Its totient is φ = 421032221210356.

The previous prime is 421032221210333. The next prime is 421032221210369. The reversal of 421032221210357 is 753012122230124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388893821192881 + 32138400017476 = 19720391^2 + 5669074^2 .

It is a cyclic number.

It is not a de Polignac number, because 421032221210357 - 2²⁰ = 421032220161781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421032221210957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210516110605178 + 210516110605179.

It is an arithmetic number, because the mean of its divisors is an integer number (210516110605179).

Almost surely, 2^{421032221210357} is an apocalyptic number.

It is an amenable number.

421032221210357 is a deficient number, since it is larger than the sum of its proper divisors (1).

421032221210357 is an equidigital number, since it uses as much as digits as its factorization.

421032221210357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 421032221210357 in words is "four hundred twenty-one trillion, thirty-two billion, two hundred twenty-one million, two hundred ten thousand, three hundred fifty-seven".