222002102021121 has 12 divisors (see below), whose sum is σ = 339532626620772. Its totient is φ = 139295436562176.

The previous prime is 222002102021099. The next prime is 222002102021137. The reversal of 222002102021121 is 121120201200222.

It is a happy number.

222002102021121 is a `hidden beast` number, since 2 + 2 + 200 + 210 + 20 + 211 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 190154860812225 + 31847241208896 = 13789665^2 + 5643336^2 .

It is not a de Polignac number, because 222002102021121 - 2¹¹ = 222002102019073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222002102021094 and 222002102021103.

It is not an unprimeable number, because it can be changed into a prime (222002102021521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 725497065276 + ... + 725497065581.

It is an arithmetic number, because the mean of its divisors is an integer number (28294385551731).

Almost surely, 2^{222002102021121} is an apocalyptic number.

It is an amenable number.

222002102021121 is a deficient number, since it is larger than the sum of its proper divisors (117530524599651).

222002102021121 is a wasteful number, since it uses less digits than its factorization.

222002102021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450994130880 (or 1450994130877 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222002102021121 its reverse (121120201200222), we get a palindrome (343122303221343).

The spelling of 222002102021121 in words is "two hundred twenty-two trillion, two billion, one hundred two million, twenty-one thousand, one hundred twenty-one".