1213012141 has 16 divisors (see below), whose sum is σ = 1333664640. Its totient is φ = 1094123520.

The previous prime is 1213012139. The next prime is 1213012187. The reversal of 1213012141 is 1412103121.

It is a cyclic number.

It is not a de Polignac number, because 1213012141 - 2¹ = 1213012139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213012741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1577005 + ... + 1577773.

It is an arithmetic number, because the mean of its divisors is an integer number (83354040).

Almost surely, 2^1213012141 is an apocalyptic number.

1213012141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213012141 is a deficient number, since it is larger than the sum of its proper divisors (120652499).

1213012141 is a wasteful number, since it uses less digits than its factorization.

1213012141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1213012141 is about 34828.3238327658. The cubic root of 1213012141 is about 1066.4857311049.

Adding to 1213012141 its reverse (1412103121), we get a palindrome (2625115262).

The spelling of 1213012141 in words is "one billion, two hundred thirteen million, twelve thousand, one hundred forty-one".