1220011 has 6 divisors (see below), whose sum is σ = 1321260. Its totient is φ = 1126008.

The previous prime is 1219991. The next prime is 1220027. The reversal of 1220011 is 1100221.

It is not a de Polignac number, because 1220011 - 2¹¹ = 1217963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1219976 and 1220003.

It is not an unprimeable number, because it can be changed into a prime (1220041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3441 + ... + 3778.

It is an arithmetic number, because the mean of its divisors is an integer number (220210).

2^1220011 is an apocalyptic number.

1220011 is a deficient number, since it is larger than the sum of its proper divisors (101249).

1220011 is an equidigital number, since it uses as much as digits as its factorization.

1220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245 (or 7232 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1220011 is about 1104.5410811735. The cubic root of 1220011 is about 106.8532941567.

Adding to 1220011 its reverse (1100221), we get a palindrome (2320232).

The spelling of 1220011 in words is "one million, two hundred twenty thousand, eleven".