1031012212121 has 8 divisors (see below), whose sum is σ = 1031891587584. Its totient is φ = 1030133211120.

The previous prime is 1031012212093. The next prime is 1031012212129. The reversal of 1031012212121 is 1212122101301.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1031012212121 - 2²² = 1031008017817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031012212121.

It is not an unprimeable number, because it can be changed into a prime (1031012212129) 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, 5559926 + ... + 5742368.

It is an arithmetic number, because the mean of its divisors is an integer number (128986448448).

Almost surely, 2^{1031012212121} is an apocalyptic number.

It is an amenable number.

1031012212121 is a deficient number, since it is larger than the sum of its proper divisors (879375463).

1031012212121 is a wasteful number, since it uses less digits than its factorization.

1031012212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187231.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1031012212121 its reverse (1212122101301), we get a palindrome (2243134313422).

The spelling of 1031012212121 in words is "one trillion, thirty-one billion, twelve million, two hundred twelve thousand, one hundred twenty-one".