1211002101002 has 32 divisors (see below), whose sum is σ = 1991768259600. Its totient is φ = 549654396928.

The previous prime is 1211002100989. The next prime is 1211002101011. The reversal of 1211002101002 is 2001012001121.

It can be written as a sum of positive squares in 8 ways, for example, as 685552536361 + 525449564641 = 827981^2 + 724879^2 .

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, 295274 + ... + 1584042.

Almost surely, 2^{1211002101002} is an apocalyptic number.

1211002101002 is a deficient number, since it is larger than the sum of its proper divisors (780766158598).

1211002101002 is a wasteful number, since it uses less digits than its factorization.

1211002101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289770.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1211002101002 its reverse (2001012001121), we get a palindrome (3212014102123).

The spelling of 1211002101002 in words is "one trillion, two hundred eleven billion, two million, one hundred one thousand, two".