1022222120121 has 32 divisors (see below), whose sum is σ = 1530056499840. Its totient is φ = 674465313600.

The previous prime is 1022222120081. The next prime is 1022222120141. The reversal of 1022222120121 is 1210212222201.

It is a happy number.

1022222120121 is a `hidden beast` number, since 1 + 0 + 222 + 221 + 201 + 21 = 666.

It is not a de Polignac number, because 1022222120121 - 2¹⁴ = 1022222103737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022222120094 and 1022222120103.

It is not an unprimeable number, because it can be changed into a prime (1022222120141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 931891 + ... + 1706711.

It is an arithmetic number, because the mean of its divisors is an integer number (47814265620).

Almost surely, 2^{1022222120121} is an apocalyptic number.

It is an amenable number.

1022222120121 is a deficient number, since it is larger than the sum of its proper divisors (507834379719).

1022222120121 is a wasteful number, since it uses less digits than its factorization.

1022222120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775334 (or 775328 counting only the distinct ones).

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

Adding to 1022222120121 its reverse (1210212222201), we get a palindrome (2232434342322).

The spelling of 1022222120121 in words is "one trillion, twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".