1021012133331 has 16 divisors (see below), whose sum is σ = 1393176723840. Its totient is φ = 664764965760.

The previous prime is 1021012133329. The next prime is 1021012133341. The reversal of 1021012133331 is 1333312101201.

It is a happy number.

It is not a de Polignac number, because 1021012133331 - 2¹ = 1021012133329 is a prime.

It is a super-2 number, since 2×1021012133331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021012133298 and 1021012133307.

It is not an unprimeable number, because it can be changed into a prime (1021012133341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606736 + ... + 1552466.

It is an arithmetic number, because the mean of its divisors is an integer number (87073545240).

Almost surely, 2^{1021012133331} is an apocalyptic number.

1021012133331 is a deficient number, since it is larger than the sum of its proper divisors (372164590509).

1021012133331 is an equidigital number, since it uses as much as digits as its factorization.

1021012133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954146.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1021012133331 its reverse (1333312101201), we get a palindrome (2354324234532).

The spelling of 1021012133331 in words is "one trillion, twenty-one billion, twelve million, one hundred thirty-three thousand, three hundred thirty-one".