221415303513401 has 2 divisors, whose sum is σ = 221415303513402. Its totient is φ = 221415303513400.

The previous prime is 221415303513389. The next prime is 221415303513431. The reversal of 221415303513401 is 104315303514122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166016756793001 + 55398546720400 = 12884749^2 + 7443020^2 .

It is a cyclic number.

It is not a de Polignac number, because 221415303513401 - 2³⁰ = 221414229771577 is a prime.

It is not a weakly prime, because it can be changed into another prime (221415303513431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110707651756700 + 110707651756701.

It is an arithmetic number, because the mean of its divisors is an integer number (110707651756701).

Almost surely, 2^{221415303513401} is an apocalyptic number.

It is an amenable number.

221415303513401 is a deficient number, since it is larger than the sum of its proper divisors (1).

221415303513401 is an equidigital number, since it uses as much as digits as its factorization.

221415303513401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 221415303513401 in words is "two hundred twenty-one trillion, four hundred fifteen billion, three hundred three million, five hundred thirteen thousand, four hundred one".