2102426535421 has 2 divisors, whose sum is σ = 2102426535422. Its totient is φ = 2102426535420.

The previous prime is 2102426535383. The next prime is 2102426535463. The reversal of 2102426535421 is 1245356242012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572240132100 + 530186403321 = 1253890^2 + 728139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102426535421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102426535821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051213267710 + 1051213267711.

It is an arithmetic number, because the mean of its divisors is an integer number (1051213267711).

Almost surely, 2^{2102426535421} is an apocalyptic number.

It is an amenable number.

2102426535421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102426535421 is an equidigital number, since it uses as much as digits as its factorization.

2102426535421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 2102426535421 in words is "two trillion, one hundred two billion, four hundred twenty-six million, five hundred thirty-five thousand, four hundred twenty-one".