1222201101 has 16 divisors (see below), whose sum is σ = 1795353408. Its totient is φ = 733392000.

The previous prime is 1222201093. The next prime is 1222201157. The reversal of 1222201101 is 1011022221.

It is not a de Polignac number, because 1222201101 - 2³ = 1222201093 is a prime.

It is a super-2 number, since 2×1222201101² = 2987551062571224402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222901101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180016 + ... + 186681.

It is an arithmetic number, because the mean of its divisors is an integer number (112209588).

Almost surely, 2^1222201101 is an apocalyptic number.

1222201101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222201101 is a deficient number, since it is larger than the sum of its proper divisors (573152307).

1222201101 is a wasteful number, since it uses less digits than its factorization.

1222201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366812.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222201101 is about 34959.9928632716. The cubic root of 1222201101 is about 1069.1719511408.

Adding to 1222201101 its reverse (1011022221), we get a palindrome (2233223322).

It can be divided in two parts, 122220 and 1101, that added together give a palindrome (123321).

The spelling of 1222201101 in words is "one billion, two hundred twenty-two million, two hundred one thousand, one hundred one".