1321000102 has 4 divisors (see below), whose sum is σ = 1981500156. Its totient is φ = 660500050.

The previous prime is 1321000081. The next prime is 1321000127. The reversal of 1321000102 is 2010001231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2010001231 = 7 ⋅287143033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330250024 + ... + 330250027.

It is an arithmetic number, because the mean of its divisors is an integer number (495375039).

Almost surely, 2^1321000102 is an apocalyptic number.

1321000102 is a deficient number, since it is larger than the sum of its proper divisors (660500054).

1321000102 is an equidigital number, since it uses as much as digits as its factorization.

1321000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660500053.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1321000102 is about 36345.5650939699. The cubic root of 1321000102 is about 1097.2382792366.

Adding to 1321000102 its reverse (2010001231), we get a palindrome (3331001333).

The spelling of 1321000102 in words is "one billion, three hundred twenty-one million, one hundred two", and thus it is an aban number.