1220149101 has 8 divisors (see below), whose sum is σ = 1628233920. Its totient is φ = 812748512.

The previous prime is 1220149069. The next prime is 1220149153. The reversal of 1220149101 is 1019410221.

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 not a de Polignac number, because 1220149101 - 2⁵ = 1220149069 is a prime.

It is a super-2 number, since 2×1220149101² = 2977527657342216402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220149001) 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, 166881 + ... + 174038.

It is an arithmetic number, because the mean of its divisors is an integer number (203529240).

Almost surely, 2^1220149101 is an apocalyptic number.

It is an amenable number.

1220149101 is a deficient number, since it is larger than the sum of its proper divisors (408084819).

1220149101 is a wasteful number, since it uses less digits than its factorization.

1220149101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342115.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1220149101 is about 34930.6327025435. The cubic root of 1220149101 is about 1068.5732581165.

Adding to 1220149101 its reverse (1019410221), we get a palindrome (2239559322).

The spelling of 1220149101 in words is "one billion, two hundred twenty million, one hundred forty-nine thousand, one hundred one".