1321012132002 has 24 divisors (see below), whose sum is σ = 2862261969840. Its totient is φ = 440326759320.

The previous prime is 1321012131997. The next prime is 1321012132031. The reversal of 1321012132002 is 2002312101231.

1321012132002 is a `hidden beast` number, since 1 + 321 + 0 + 1 + 21 + 320 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98752 + ... + 1628427.

It is an arithmetic number, because the mean of its divisors is an integer number (119260915410).

Almost surely, 2^{1321012132002} is an apocalyptic number.

1321012132002 is an abundant number, since it is smaller than the sum of its proper divisors (1541249837838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321012132002 is a wasteful number, since it uses less digits than its factorization.

1321012132002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769678 (or 1769675 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1321012132002 its reverse (2002312101231), we get a palindrome (3323324233233).

The spelling of 1321012132002 in words is "one trillion, three hundred twenty-one billion, twelve million, one hundred thirty-two thousand, two".