2221121303023 has 16 divisors (see below), whose sum is σ = 2542142693376. Its totient is φ = 1901030029920.

The previous prime is 2221121302999. The next prime is 2221121303029. The reversal of 2221121303023 is 3203031211222.

It is not a de Polignac number, because 2221121303023 - 2¹³ = 2221121294831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221121302985 and 2221121303003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221121303029) 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, 79224018 + ... + 79252048.

It is an arithmetic number, because the mean of its divisors is an integer number (158883918336).

Almost surely, 2^{2221121303023} is an apocalyptic number.

2221121303023 is a deficient number, since it is larger than the sum of its proper divisors (321021390353).

2221121303023 is a wasteful number, since it uses less digits than its factorization.

2221121303023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44214.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2221121303023 its reverse (3203031211222), we get a palindrome (5424152514245).

The spelling of 2221121303023 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, three hundred three thousand, twenty-three".