1220022101 has 8 divisors (see below), whose sum is σ = 1251022080. Its totient is φ = 1189141632.

The previous prime is 1220022077. The next prime is 1220022103. The reversal of 1220022101 is 1012200221.

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 a de Polignac number, because none of the positive numbers 2^k-1220022101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022103) 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, 9020 + ... + 50213.

It is an arithmetic number, because the mean of its divisors is an integer number (156377760).

Almost surely, 2^1220022101 is an apocalyptic number.

It is an amenable number.

1220022101 is a deficient number, since it is larger than the sum of its proper divisors (30999979).

1220022101 is an equidigital number, since it uses as much as digits as its factorization.

1220022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59755.

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

The square root of 1220022101 is about 34928.8147666078. The cubic root of 1220022101 is about 1068.5361824530.

Adding to 1220022101 its reverse (1012200221), we get a palindrome (2232222322).

The spelling of 1220022101 in words is "one billion, two hundred twenty million, twenty-two thousand, one hundred one".