22121210020120 has 128 divisors (see below), whose sum is σ = 50193401544000. Its totient is φ = 8774094422016.

The previous prime is 22121210020099. The next prime is 22121210020157. The reversal of 22121210020120 is 2102001212122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22121210020094 and 22121210020103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2366153206 + ... + 2366162554.

Almost surely, 2^{22121210020120} is an apocalyptic number.

22121210020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121210020120 is an abundant number, since it is smaller than the sum of its proper divisors (28072191523880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121210020120 is a wasteful number, since it uses less digits than its factorization.

22121210020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10637 (or 10633 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22121210020120 its reverse (2102001212122), we get a palindrome (24223211232242).

The spelling of 22121210020120 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, one hundred twenty".