1021441200123 has 16 divisors (see below), whose sum is σ = 1440143695872. Its totient is φ = 642921288000.

The previous prime is 1021441200107. The next prime is 1021441200163. The reversal of 1021441200123 is 3210021441201.

It is not a de Polignac number, because 1021441200123 - 2⁴ = 1021441200107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021441200123.

It is not an unprimeable number, because it can be changed into a prime (1021441200163) 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, 133938123 + ... + 133945748.

It is an arithmetic number, because the mean of its divisors is an integer number (90008980992).

Almost surely, 2^{1021441200123} is an apocalyptic number.

1021441200123 is a deficient number, since it is larger than the sum of its proper divisors (418702495749).

1021441200123 is a wasteful number, since it uses less digits than its factorization.

1021441200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267883946.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1021441200123 its reverse (3210021441201), we get a palindrome (4231462641324).

The spelling of 1021441200123 in words is "one trillion, twenty-one billion, four hundred forty-one million, two hundred thousand, one hundred twenty-three".