1321000220102 has 8 divisors (see below), whose sum is σ = 1981760973816. Its totient is φ = 660413228832.

The previous prime is 1321000220081. The next prime is 1321000220143. The reversal of 1321000220102 is 2010220001231.

It is a happy number.

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

It is a congruent number.

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, 43421603 + ... + 43452014.

It is an arithmetic number, because the mean of its divisors is an integer number (247720121727).

Almost surely, 2^{1321000220102} is an apocalyptic number.

1321000220102 is a deficient number, since it is larger than the sum of its proper divisors (660760753714).

1321000220102 is an equidigital number, since it uses as much as digits as its factorization.

1321000220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86881222.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1321000220102 its reverse (2010220001231), we get a palindrome (3331220221333).

The spelling of 1321000220102 in words is "one trillion, three hundred twenty-one billion, two hundred twenty thousand, one hundred two".