1211010220012 has 24 divisors (see below), whose sum is σ = 2153718927360. Its totient is φ = 595698480720.

The previous prime is 1211010219983. The next prime is 1211010220033. The reversal of 1211010220012 is 2100220101121.

It is a junction number, because it is equal to n+sod(n) for n = 1211010219974 and 1211010220001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4432812 + ... + 4698067.

It is an arithmetic number, because the mean of its divisors is an integer number (89738288640).

Almost surely, 2^{1211010220012} is an apocalyptic number.

It is an amenable number.

1211010220012 is a deficient number, since it is larger than the sum of its proper divisors (942708707348).

1211010220012 is a wasteful number, since it uses less digits than its factorization.

1211010220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131421 (or 9131419 counting only the distinct ones).

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

Adding to 1211010220012 its reverse (2100220101121), we get a palindrome (3311230321133).

The spelling of 1211010220012 in words is "one trillion, two hundred eleven billion, ten million, two hundred twenty thousand, twelve".