1012213303121 has 8 divisors (see below), whose sum is σ = 1012917807720. Its totient is φ = 1011508907008.

The previous prime is 1012213303093. The next prime is 1012213303133. The reversal of 1012213303121 is 1213033122101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99492930625 + 912720372496 = 315425^2 + 955364^2 .

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-1012213303121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012213303093 and 1012213303102.

It is not an unprimeable number, because it can be changed into a prime (1012213303141) 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, 29004935 + ... + 29039811.

It is an arithmetic number, because the mean of its divisors is an integer number (126614725965).

Almost surely, 2^{1012213303121} is an apocalyptic number.

It is an amenable number.

1012213303121 is a deficient number, since it is larger than the sum of its proper divisors (704504599).

1012213303121 is a wasteful number, since it uses less digits than its factorization.

1012213303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54243.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1012213303121 its reverse (1213033122101), we get a palindrome (2225246425222).

The spelling of 1012213303121 in words is "one trillion, twelve billion, two hundred thirteen million, three hundred three thousand, one hundred twenty-one".