1201210001002 has 16 divisors (see below), whose sum is σ = 1966356248832. Its totient is φ = 545799022720.

The previous prime is 1201210000997. The next prime is 1201210001003. The reversal of 1201210001002 is 2001000121021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201210001002.

It is not an unprimeable number, because it can be changed into a prime (1201210001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10216378 + ... + 10333285.

It is an arithmetic number, because the mean of its divisors is an integer number (122897265552).

Almost surely, 2^{1201210001002} is an apocalyptic number.

1201210001002 is a deficient number, since it is larger than the sum of its proper divisors (765146247830).

1201210001002 is a wasteful number, since it uses less digits than its factorization.

1201210001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552333.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201210001002 its reverse (2001000121021), we get a palindrome (3202210122023).

The spelling of 1201210001002 in words is "one trillion, two hundred one billion, two hundred ten million, one thousand, two".