1021240353451 has 2 divisors, whose sum is σ = 1021240353452. Its totient is φ = 1021240353450.

The previous prime is 1021240353437. The next prime is 1021240353481. The reversal of 1021240353451 is 1543530421201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021240353451 - 2²³ = 1021231964843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021240353481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510620176725 + 510620176726.

It is an arithmetic number, because the mean of its divisors is an integer number (510620176726).

Almost surely, 2^{1021240353451} is an apocalyptic number.

1021240353451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021240353451 is an equidigital number, since it uses as much as digits as its factorization.

1021240353451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1021240353451 its reverse (1543530421201), we get a palindrome (2564770774652).

The spelling of 1021240353451 in words is "one trillion, twenty-one billion, two hundred forty million, three hundred fifty-three thousand, four hundred fifty-one".