1220102201 has 4 divisors (see below), whose sum is σ = 1221209472. Its totient is φ = 1218994932.

The previous prime is 1220102173. The next prime is 1220102207. The reversal of 1220102201 is 1022010221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220102201 - 2²² = 1215907897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220102207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551981 + ... + 554186.

It is an arithmetic number, because the mean of its divisors is an integer number (305302368).

Almost surely, 2^1220102201 is an apocalyptic number.

It is an amenable number.

1220102201 is a deficient number, since it is larger than the sum of its proper divisors (1107271).

1220102201 is a wasteful number, since it uses less digits than its factorization.

1220102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107270.

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

The square root of 1220102201 is about 34929.9613655670. The cubic root of 1220102201 is about 1068.5595666947.

Adding to 1220102201 its reverse (1022010221), we get a palindrome (2242112422).

It can be divided in two parts, 122010220 and 1, that added together give a palindrome (122010221).

The spelling of 1220102201 in words is "one billion, two hundred twenty million, one hundred two thousand, two hundred one".