1220412351013 has 16 divisors (see below), whose sum is σ = 1244442242736. Its totient is φ = 1196625346560.

The previous prime is 1220412350977. The next prime is 1220412351047. The reversal of 1220412351013 is 3101532140221.

It can be written as a sum of positive squares in 8 ways, for example, as 744204704929 + 476207646084 = 862673^2 + 690078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220412351013 - 2⁹ = 1220412350501 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 (1220412351713) 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, 26732995 + ... + 26778607.

It is an arithmetic number, because the mean of its divisors is an integer number (77777640171).

Almost surely, 2^{1220412351013} is an apocalyptic number.

It is an amenable number.

1220412351013 is a deficient number, since it is larger than the sum of its proper divisors (24029891723).

1220412351013 is a wasteful number, since it uses less digits than its factorization.

1220412351013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48264.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1220412351013 its reverse (3101532140221), we get a palindrome (4321944491234).

The spelling of 1220412351013 in words is "one trillion, two hundred twenty billion, four hundred twelve million, three hundred fifty-one thousand, thirteen".