1031012221213 has 8 divisors (see below), whose sum is σ = 1117132640288. Its totient is φ = 945864914544.

The previous prime is 1031012221193. The next prime is 1031012221231. The reversal of 1031012221213 is 3121222101301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031012221213 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 (1031012221513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243275895 + ... + 243280132.

It is an arithmetic number, because the mean of its divisors is an integer number (139641580036).

Almost surely, 2^{1031012221213} is an apocalyptic number.

1031012221213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1031012221213 is a deficient number, since it is larger than the sum of its proper divisors (86120419075).

1031012221213 is a wasteful number, since it uses less digits than its factorization.

1031012221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486556203.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1031012221213 its reverse (3121222101301), we get a palindrome (4152234322514).

The spelling of 1031012221213 in words is "one trillion, thirty-one billion, twelve million, two hundred twenty-one thousand, two hundred thirteen".