1321002021434 has 8 divisors (see below), whose sum is σ = 1984973266848. Its totient is φ = 659344265820.

The previous prime is 1321002021407. The next prime is 1321002021461. The reversal of 1321002021434 is 4341202001231.

It is an interprime number because it is at equal distance from previous prime (1321002021407) and next prime (1321002021461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578371022 + ... + 578373305.

It is an arithmetic number, because the mean of its divisors is an integer number (248121658356).

Almost surely, 2^{1321002021434} is an apocalyptic number.

1321002021434 is a deficient number, since it is larger than the sum of its proper divisors (663971245414).

1321002021434 is a wasteful number, since it uses less digits than its factorization.

1321002021434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156744900.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1321002021434 its reverse (4341202001231), we get a palindrome (5662204022665).

The spelling of 1321002021434 in words is "one trillion, three hundred twenty-one billion, two million, twenty-one thousand, four hundred thirty-four".