1211002120012 has 48 divisors (see below), whose sum is σ = 2167296191424. Its totient is φ = 591861920000.

The previous prime is 1211002120007. The next prime is 1211002120033. The reversal of 1211002120012 is 2100212001121.

It is a super-2 number, since 2×1211002120012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211002119974 and 1211002120001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180716262 + ... + 180722962.

It is an arithmetic number, because the mean of its divisors is an integer number (45152003988).

Almost surely, 2^{1211002120012} is an apocalyptic number.

It is an amenable number.

1211002120012 is a deficient number, since it is larger than the sum of its proper divisors (956294071412).

1211002120012 is a wasteful number, since it uses less digits than its factorization.

1211002120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810 (or 9808 counting only the distinct ones).

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

Adding to 1211002120012 its reverse (2100212001121), we get a palindrome (3311214121133).

The spelling of 1211002120012 in words is "one trillion, two hundred eleven billion, two million, one hundred twenty thousand, twelve".