2211420286421 has 2 divisors, whose sum is σ = 2211420286422. Its totient is φ = 2211420286420.

The previous prime is 2211420286409. The next prime is 2211420286457. The reversal of 2211420286421 is 1246820241122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2141042032900 + 70378253521 = 1463230^2 + 265289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211420286421 - 2¹⁰ = 2211420285397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211422286421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105710143210 + 1105710143211.

It is an arithmetic number, because the mean of its divisors is an integer number (1105710143211).

Almost surely, 2^{2211420286421} is an apocalyptic number.

It is an amenable number.

2211420286421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211420286421 is an equidigital number, since it uses as much as digits as its factorization.

2211420286421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 2211420286421 in words is "two trillion, two hundred eleven billion, four hundred twenty million, two hundred eighty-six thousand, four hundred twenty-one".