1321121133002 has 32 divisors (see below), whose sum is σ = 2308521945600. Its totient is φ = 561099067200.

The previous prime is 1321121132987. The next prime is 1321121133071. The reversal of 1321121133002 is 2003311211231.

It is a happy number.

It is a super-2 number, since 2×1321121133002² (a number of 25 digits) contains 22 as substring.

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, 33378977 + ... + 33418532.

It is an arithmetic number, because the mean of its divisors is an integer number (72141310800).

Almost surely, 2^{1321121133002} is an apocalyptic number.

1321121133002 is a deficient number, since it is larger than the sum of its proper divisors (987400812598).

1321121133002 is a wasteful number, since it uses less digits than its factorization.

1321121133002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66797582.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1321121133002 its reverse (2003311211231), we get a palindrome (3324432344233).

The spelling of 1321121133002 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, two".