1202220011 has 4 divisors (see below), whose sum is σ = 1202652024. Its totient is φ = 1201788000.

The previous prime is 1202219989. The next prime is 1202220013. The reversal of 1202220011 is 1100222021.

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: 1100222021 = 83 ⋅13255687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202220011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202219974 and 1202220001.

It is not an unprimeable number, because it can be changed into a prime (1202220013) 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, 211805 + ... + 217406.

It is an arithmetic number, because the mean of its divisors is an integer number (300663006).

Almost surely, 2^1202220011 is an apocalyptic number.

1202220011 is a deficient number, since it is larger than the sum of its proper divisors (432013).

1202220011 is an equidigital number, since it uses as much as digits as its factorization.

1202220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432012.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1202220011 is about 34673.0444437751. The cubic root of 1202220011 is about 1063.3134748527.

Adding to 1202220011 its reverse (1100222021), we get a palindrome (2302442032).

The spelling of 1202220011 in words is "one billion, two hundred two million, two hundred twenty thousand, eleven".