1210220411 has 4 divisors (see below), whose sum is σ = 1239738024. Its totient is φ = 1180702800.

The previous prime is 1210220399. The next prime is 1210220413. The reversal of 1210220411 is 1140220121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1140220121 = 43 ⋅26516747.

It is a cyclic number.

It is not a de Polignac number, because 1210220411 - 2²⁶ = 1143111547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210220413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14758745 + ... + 14758826.

It is an arithmetic number, because the mean of its divisors is an integer number (309934506).

Almost surely, 2^1210220411 is an apocalyptic number.

1210220411 is a deficient number, since it is larger than the sum of its proper divisors (29517613).

1210220411 is an equidigital number, since it uses as much as digits as its factorization.

1210220411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29517612.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1210220411 is about 34788.2223029576. Note that the first 3 decimals coincide. The cubic root of 1210220411 is about 1065.6669354429. Note that the first 3 decimals are identical.

Adding to 1210220411 its reverse (1140220121), we get a palindrome (2350440532).

The spelling of 1210220411 in words is "one billion, two hundred ten million, two hundred twenty thousand, four hundred eleven".