1211210223201 has 48 divisors (see below), whose sum is σ = 1963238397120. Its totient is φ = 713190528000.

The previous prime is 1211210223193. The next prime is 1211210223203. The reversal of 1211210223201 is 1023220121121.

1211210223201 is a `hidden beast` number, since 1 + 211 + 210 + 223 + 20 + 1 = 666.

It is not a de Polignac number, because 1211210223201 - 2³ = 1211210223193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211210223203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359130 + ... + 1597308.

It is an arithmetic number, because the mean of its divisors is an integer number (40900799940).

Almost surely, 2^{1211210223201} is an apocalyptic number.

1211210223201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211210223201 is a deficient number, since it is larger than the sum of its proper divisors (752028173919).

1211210223201 is a wasteful number, since it uses less digits than its factorization.

1211210223201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238478 (or 1238475 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211210223201 its reverse (1023220121121), we get a palindrome (2234430344322).

The spelling of 1211210223201 in words is "one trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-three thousand, two hundred one".