1220353101 has 32 divisors (see below), whose sum is σ = 1974672000. Its totient is φ = 738714240.

The previous prime is 1220353097. The next prime is 1220353133. The reversal of 1220353101 is 1013530221.

It is not a de Polignac number, because 1220353101 - 2² = 1220353097 is a prime.

It is a super-2 number, since 2×1220353101² = 2978523382240632402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220353181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309595 + ... + 313511.

It is an arithmetic number, because the mean of its divisors is an integer number (61708500).

Almost surely, 2^1220353101 is an apocalyptic number.

1220353101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220353101 is a deficient number, since it is larger than the sum of its proper divisors (754318899).

1220353101 is a wasteful number, since it uses less digits than its factorization.

1220353101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1220353101 is about 34933.5526535736. The cubic root of 1220353101 is about 1068.6328073407.

Adding to 1220353101 its reverse (1013530221), we get a palindrome (2233883322).

The spelling of 1220353101 in words is "one billion, two hundred twenty million, three hundred fifty-three thousand, one hundred one".