1220022011 has 8 divisors (see below), whose sum is σ = 1316178864. Its totient is φ = 1124195040.

The previous prime is 1220021989. The next prime is 1220022029. The reversal of 1220022011 is 1102200221.

It is a happy number.

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 1220022011 - 2⁶ = 1220021947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220021983 and 1220022001.

It is not an unprimeable number, because it can be changed into a prime (1220022031) 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, 74756 + ... + 89601.

It is an arithmetic number, because the mean of its divisors is an integer number (164522358).

Almost surely, 2^1220022011 is an apocalyptic number.

1220022011 is a deficient number, since it is larger than the sum of its proper divisors (96156853).

1220022011 is a wasteful number, since it uses less digits than its factorization.

1220022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164941.

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

The square root of 1220022011 is about 34928.8134782732. The cubic root of 1220022011 is about 1068.5361561780.

Adding to 1220022011 its reverse (1102200221), we get a palindrome (2322222232).

The spelling of 1220022011 in words is "one billion, two hundred twenty million, twenty-two thousand, eleven".