1220854141 has 12 divisors (see below), whose sum is σ = 1323259092. Its totient is φ = 1125860736.

The previous prime is 1220854123. The next prime is 1220854163. The reversal of 1220854141 is 1414580221.

It can be written as a sum of positive squares in 6 ways, for example, as 325946916 + 894907225 = 18054^2 + 29915^2 .

It is not a de Polignac number, because 1220854141 - 2⁷ = 1220854013 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 (1220854181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212985 + ... + 218641.

It is an arithmetic number, because the mean of its divisors is an integer number (110271591).

Almost surely, 2^1220854141 is an apocalyptic number.

It is an amenable number.

1220854141 is a deficient number, since it is larger than the sum of its proper divisors (102404951).

1220854141 is a wasteful number, since it uses less digits than its factorization.

1220854141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960 (or 6947 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1220854141 is about 34940.7232466645. The cubic root of 1220854141 is about 1068.7790367452.

The spelling of 1220854141 in words is "one billion, two hundred twenty million, eight hundred fifty-four thousand, one hundred forty-one".