1031012013021 has 8 divisors (see below), whose sum is σ = 1447034404320. Its totient is φ = 651165481872.

The previous prime is 1031012012981. The next prime is 1031012013047. The reversal of 1031012013021 is 1203102101301.

It is a happy number.

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

It is not a de Polignac number, because 1031012013021 - 2⁹ = 1031012012509 is a prime.

It is a super-2 number, since 2×1031012013021² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031012013061) 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, 9043964970 + ... + 9043965083.

It is an arithmetic number, because the mean of its divisors is an integer number (180879300540).

Almost surely, 2^{1031012013021} is an apocalyptic number.

It is an amenable number.

1031012013021 is a deficient number, since it is larger than the sum of its proper divisors (416022391299).

1031012013021 is a wasteful number, since it uses less digits than its factorization.

1031012013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18087930075.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1031012013021 its reverse (1203102101301), we get a palindrome (2234114114322).

The spelling of 1031012013021 in words is "one trillion, thirty-one billion, twelve million, thirteen thousand, twenty-one".