1421100221449 has 2 divisors, whose sum is σ = 1421100221450. Its totient is φ = 1421100221448.

The previous prime is 1421100221423. The next prime is 1421100221483. The reversal of 1421100221449 is 9441220011241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1098027345424 + 323072876025 = 1047868^2 + 568395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421100221449 - 2²⁵ = 1421066667017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421100221449.

It is not a weakly prime, because it can be changed into another prime (1421100222449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710550110724 + 710550110725.

It is an arithmetic number, because the mean of its divisors is an integer number (710550110725).

Almost surely, 2^{1421100221449} is an apocalyptic number.

It is an amenable number.

1421100221449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421100221449 is an equidigital number, since it uses as much as digits as its factorization.

1421100221449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 1421100221449 in words is "one trillion, four hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, four hundred forty-nine".