1210011010221 has 16 divisors (see below), whose sum is σ = 1737472419200. Its totient is φ = 744613283520.

The previous prime is 1210011010213. The next prime is 1210011010231. The reversal of 1210011010221 is 1220101100121.

It is not a de Polignac number, because 1210011010221 - 2³ = 1210011010213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210011010197 and 1210011010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210011010231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894731 + ... + 5135991.

It is an arithmetic number, because the mean of its divisors is an integer number (108592026200).

Almost surely, 2^{1210011010221} is an apocalyptic number.

It is an amenable number.

1210011010221 is a deficient number, since it is larger than the sum of its proper divisors (527461408979).

1210011010221 is a wasteful number, since it uses less digits than its factorization.

1210011010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369876.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210011010221 its reverse (1220101100121), we get a palindrome (2430112110342).

The spelling of 1210011010221 in words is "one trillion, two hundred ten billion, eleven million, ten thousand, two hundred twenty-one".