1021243114345 has 16 divisors (see below), whose sum is σ = 1267816872960. Its totient is φ = 788780703424.

The previous prime is 1021243114321. The next prime is 1021243114429. The reversal of 1021243114345 is 5434113421201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1021243114345 - 2⁹ = 1021243113833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2733612 + ... + 3084658.

It is an arithmetic number, because the mean of its divisors is an integer number (79238554560).

Almost surely, 2^{1021243114345} is an apocalyptic number.

It is an amenable number.

1021243114345 is a deficient number, since it is larger than the sum of its proper divisors (246573758615).

1021243114345 is a wasteful number, since it uses less digits than its factorization.

1021243114345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371144.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1021243114345 its reverse (5434113421201), we get a palindrome (6455356535546).

The spelling of 1021243114345 in words is "one trillion, twenty-one billion, two hundred forty-three million, one hundred fourteen thousand, three hundred forty-five".