1220132101 has 4 divisors (see below), whose sum is σ = 1284349600. Its totient is φ = 1155914604.

The previous prime is 1220132071. The next prime is 1220132113. The reversal of 1220132101 is 1012310221.

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 1220132101 - 2⁹ = 1220131589 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 (1220132171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32108721 + ... + 32108758.

It is an arithmetic number, because the mean of its divisors is an integer number (321087400).

Almost surely, 2^1220132101 is an apocalyptic number.

It is an amenable number.

1220132101 is a deficient number, since it is larger than the sum of its proper divisors (64217499).

1220132101 is an equidigital number, since it uses as much as digits as its factorization.

1220132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64217498.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1220132101 is about 34930.3893622731. The cubic root of 1220132101 is about 1068.5682953815.

Adding to 1220132101 its reverse (1012310221), we get a palindrome (2232442322).

The spelling of 1220132101 in words is "one billion, two hundred twenty million, one hundred thirty-two thousand, one hundred one".