1221110210022 has 16 divisors (see below), whose sum is σ = 2446512554160. Its totient is φ = 406321380992.

The previous prime is 1221110210011. The next prime is 1221110210027. The reversal of 1221110210022 is 2200120111221.

It is a super-2 number, since 2×1221110210022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221110209983 and 1221110210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221110210027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178835223 + ... + 178842050.

It is an arithmetic number, because the mean of its divisors is an integer number (152907034635).

Almost surely, 2^{1221110210022} is an apocalyptic number.

1221110210022 is an abundant number, since it is smaller than the sum of its proper divisors (1225402344138).

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

1221110210022 is a wasteful number, since it uses less digits than its factorization.

1221110210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357677847.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1221110210022 its reverse (2200120111221), we get a palindrome (3421230321243).

The spelling of 1221110210022 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, two hundred ten thousand, twenty-two".