18922404300121 has 9 divisors (see below), whose sum is σ = 22011811852149. Its totient is φ = 16219177585884.

The previous prime is 18922404300083. The next prime is 18922404300131. The reversal of 18922404300121 is 12100340422981.

The square root of 18922404300121 is 4349989.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 18922404300121 - 2¹³ = 18922404291929 is a prime.

It is a super-2 number, since 2×18922404300121² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18922404300131) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30139210 + ... + 30760636.

It is an arithmetic number, because the mean of its divisors is an integer number (2445756872461).

Almost surely, 2^{18922404300121} is an apocalyptic number.

18922404300121 is the 4349989-th square number.

18922404300121 is the 2174995-th centered octagonal number.

It is an amenable number.

18922404300121 is a deficient number, since it is larger than the sum of its proper divisors (3089407552028).

18922404300121 is an frugal number, since it uses more digits than its factorization.

18922404300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242868 (or 621434 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 18922404300121 in words is "eighteen trillion, nine hundred twenty-two billion, four hundred four million, three hundred thousand, one hundred twenty-one".