1210120013 has 24 divisors (see below), whose sum is σ = 1309603680. Its totient is φ = 1117683360.

The previous prime is 1210120003. The next prime is 1210120049. The reversal of 1210120013 is 3100210121.

It is not a de Polignac number, because 1210120013 - 2²² = 1205925709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210119976 and 1210120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210120003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3941606 + ... + 3941912.

It is an arithmetic number, because the mean of its divisors is an integer number (54566820).

Almost surely, 2^1210120013 is an apocalyptic number.

It is an amenable number.

1210120013 is a deficient number, since it is larger than the sum of its proper divisors (99483667).

1210120013 is a wasteful number, since it uses less digits than its factorization.

1210120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1210120013 is about 34786.7792846650. The cubic root of 1210120013 is about 1065.6374659383.

Adding to 1210120013 its reverse (3100210121), we get a palindrome (4310330134).

The spelling of 1210120013 in words is "one billion, two hundred ten million, one hundred twenty thousand, thirteen".