1042220011 has 4 divisors (see below), whose sum is σ = 1191108592. Its totient is φ = 893331432.

The previous prime is 1042219987. The next prime is 1042220027. The reversal of 1042220011 is 1100222401.

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: 1100222401 = 997 ⋅1103533.

It is not a de Polignac number, because 1042220011 - 2¹⁵ = 1042187243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042219973 and 1042220000.

It is not an unprimeable number, because it can be changed into a prime (1042229011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74444280 + ... + 74444293.

It is an arithmetic number, because the mean of its divisors is an integer number (297777148).

Almost surely, 2^1042220011 is an apocalyptic number.

1042220011 is a deficient number, since it is larger than the sum of its proper divisors (148888581).

1042220011 is an equidigital number, since it uses as much as digits as its factorization.

1042220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148888580.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1042220011 is about 32283.4324538144. The cubic root of 1042220011 is about 1013.8797969287.

Adding to 1042220011 its reverse (1100222401), we get a palindrome (2142442412).

The spelling of 1042220011 in words is "one billion, forty-two million, two hundred twenty thousand, eleven".