1021230023331 has 16 divisors (see below), whose sum is σ = 1556174297600. Its totient is φ = 583554665088.

The previous prime is 1021230023329. The next prime is 1021230023353. The reversal of 1021230023331 is 1333200321201.

It is not a de Polignac number, because 1021230023331 - 2¹ = 1021230023329 is a prime.

It is a super-2 number, since 2×1021230023331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021230023298 and 1021230023307.

It is not an unprimeable number, because it can be changed into a prime (1021230023311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3878475 + ... + 4133403.

It is an arithmetic number, because the mean of its divisors is an integer number (97260893600).

Almost surely, 2^{1021230023331} is an apocalyptic number.

1021230023331 is a deficient number, since it is larger than the sum of its proper divisors (534944274269).

1021230023331 is a wasteful number, since it uses less digits than its factorization.

1021230023331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445698.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1021230023331 its reverse (1333200321201), we get a palindrome (2354430344532).

The spelling of 1021230023331 in words is "one trillion, twenty-one billion, two hundred thirty million, twenty-three thousand, three hundred thirty-one".