75012221001002 has 4 divisors (see below), whose sum is σ = 112518331501506. Its totient is φ = 37506110500500.

The previous prime is 75012221000999. The next prime is 75012221001013. The reversal of 75012221001002 is 20010012221057.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74958868778641 + 53352222361 = 8657879^2 + 230981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18753055250249 + ... + 18753055250252.

Almost surely, 2^{75012221001002} is an apocalyptic number.

75012221001002 is a deficient number, since it is larger than the sum of its proper divisors (37506110500504).

75012221001002 is a wasteful number, since it uses less digits than its factorization.

75012221001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37506110500503.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 75012221001002 its reverse (20010012221057), we get a palindrome (95022233222059).

The spelling of 75012221001002 in words is "seventy-five trillion, twelve billion, two hundred twenty-one million, one thousand, two".