1201211021002 has 4 divisors (see below), whose sum is σ = 1801816531506. Its totient is φ = 600605510500.

The previous prime is 1201211020913. The next prime is 1201211021041. The reversal of 1201211021002 is 2001201121021.

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., 1197232060761 + 3978960241 = 1094181^2 + 63079^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300302755249 + ... + 300302755252.

Almost surely, 2^{1201211021002} is an apocalyptic number.

1201211021002 is a deficient number, since it is larger than the sum of its proper divisors (600605510504).

1201211021002 is an equidigital number, since it uses as much as digits as its factorization.

1201211021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600605510503.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201211021002 its reverse (2001201121021), we get a palindrome (3202412142023).

The spelling of 1201211021002 in words is "one trillion, two hundred one billion, two hundred eleven million, twenty-one thousand, two".