1021213233123 has 16 divisors (see below), whose sum is σ = 1384003894272. Its totient is φ = 669616740000.

The previous prime is 1021213233059. The next prime is 1021213233149. The reversal of 1021213233123 is 3213323121201.

It is not a de Polignac number, because 1021213233123 - 2⁶ = 1021213233059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021213233093 and 1021213233102.

It is not an unprimeable number, because it can be changed into a prime (1021213233823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4187598 + ... + 4424748.

It is an arithmetic number, because the mean of its divisors is an integer number (86500243392).

Almost surely, 2^{1021213233123} is an apocalyptic number.

1021213233123 is a deficient number, since it is larger than the sum of its proper divisors (362790661149).

1021213233123 is a wasteful number, since it uses less digits than its factorization.

1021213233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260746.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1021213233123 its reverse (3213323121201), we get a palindrome (4234536354324).

The spelling of 1021213233123 in words is "one trillion, twenty-one billion, two hundred thirteen million, two hundred thirty-three thousand, one hundred twenty-three".