1222022120121 has 160 divisors (see below), whose sum is σ = 2157654343680. Its totient is φ = 681542294400.

The previous prime is 1222022120117. The next prime is 1222022120149. The reversal of 1222022120121 is 1210212202221.

It is a happy number.

1222022120121 is a `hidden beast` number, since 1 + 2 + 220 + 221 + 201 + 21 = 666.

It is not a de Polignac number, because 1222022120121 - 2² = 1222022120117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222022120094 and 1222022120103.

It is not an unprimeable number, because it can be changed into a prime (1222022120101) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 109898400 + ... + 109909518.

It is an arithmetic number, because the mean of its divisors is an integer number (13485339648).

Almost surely, 2^{1222022120121} is an apocalyptic number.

1222022120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222022120121 is a deficient number, since it is larger than the sum of its proper divisors (935632223559).

1222022120121 is a wasteful number, since it uses less digits than its factorization.

1222022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11369 (or 11360 counting only the distinct ones).

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

Adding to 1222022120121 its reverse (1210212202221), we get a palindrome (2432234322342).

The spelling of 1222022120121 in words is "one trillion, two hundred twenty-two billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".