1020123210045 has 16 divisors (see below), whose sum is σ = 1632386102400. Its totient is φ = 544002723264.

The previous prime is 1020123210031. The next prime is 1020123210049. The reversal of 1020123210045 is 5400123210201.

It is not a de Polignac number, because 1020123210045 - 2²⁹ = 1019586339133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020123210049) 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, 3802770 + ... + 4062179.

It is an arithmetic number, because the mean of its divisors is an integer number (102024131400).

Almost surely, 2^{1020123210045} is an apocalyptic number.

1020123210045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020123210045 is a deficient number, since it is larger than the sum of its proper divisors (612262892355).

1020123210045 is an equidigital number, since it uses as much as digits as its factorization.

1020123210045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873604.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1020123210045 its reverse (5400123210201), we get a palindrome (6420246420246).

The spelling of 1020123210045 in words is "one trillion, twenty billion, one hundred twenty-three million, two hundred ten thousand, forty-five".