1220145141 has 16 divisors (see below), whose sum is σ = 1650874880. Its totient is φ = 801446400.

The previous prime is 1220145137. The next prime is 1220145181. The reversal of 1220145141 is 1415410221.

It is not a de Polignac number, because 1220145141 - 2² = 1220145137 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 (1220145181) 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, 260700 + ... + 265338.

It is an arithmetic number, because the mean of its divisors is an integer number (103179680).

Almost surely, 2^1220145141 is an apocalyptic number.

It is an amenable number.

1220145141 is a deficient number, since it is larger than the sum of its proper divisors (430729739).

1220145141 is a wasteful number, since it uses less digits than its factorization.

1220145141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1220145141 is about 34930.5760187261. The cubic root of 1220145141 is about 1068.5721020953.

Adding to 1220145141 its reverse (1415410221), we get a palindrome (2635555362).

The spelling of 1220145141 in words is "one billion, two hundred twenty million, one hundred forty-five thousand, one hundred forty-one".