1221140312141 has 16 divisors (see below), whose sum is σ = 1229495319360. Its totient is φ = 1212817791360.

The previous prime is 1221140312131. The next prime is 1221140312153. The reversal of 1221140312141 is 1412130411221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221140312141 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 (1221140312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323136590 + ... + 323140368.

It is an arithmetic number, because the mean of its divisors is an integer number (76843457460).

Almost surely, 2^{1221140312141} is an apocalyptic number.

It is an amenable number.

1221140312141 is a deficient number, since it is larger than the sum of its proper divisors (8355007219).

1221140312141 is a wasteful number, since it uses less digits than its factorization.

1221140312141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7516.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 1221140312141 its reverse (1412130411221), we get a palindrome (2633270723362).

The spelling of 1221140312141 in words is "one trillion, two hundred twenty-one billion, one hundred forty million, three hundred twelve thousand, one hundred forty-one".