1220210011 has 8 divisors (see below), whose sum is σ = 1256862464. Its totient is φ = 1183933800.

The previous prime is 1220210009. The next prime is 1220210029. The reversal of 1220210011 is 1100120221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220210011 - 2¹ = 1220210009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220210011.

It is not an unprimeable number, because it can be changed into a prime (1220210051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87471 + ... + 100456.

It is an arithmetic number, because the mean of its divisors is an integer number (157107808).

Almost surely, 2^1220210011 is an apocalyptic number.

1220210011 is a deficient number, since it is larger than the sum of its proper divisors (36652453).

1220210011 is a wasteful number, since it uses less digits than its factorization.

1220210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188121.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220210011 is about 34931.5045625006. The cubic root of 1220210011 is about 1068.5910389254.

Adding to 1220210011 its reverse (1100120221), we get a palindrome (2320330232).

The spelling of 1220210011 in words is "one billion, two hundred twenty million, two hundred ten thousand, eleven".