1221210300022 has 16 divisors (see below), whose sum is σ = 1868843621232. Its totient is φ = 598292866080.

The previous prime is 1221210300019. The next prime is 1221210300049. The reversal of 1221210300022 is 2200030121221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221210299969 and 1221210300005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7529304 + ... + 7689787.

It is an arithmetic number, because the mean of its divisors is an integer number (116802726327).

Almost surely, 2^{1221210300022} is an apocalyptic number.

1221210300022 is a deficient number, since it is larger than the sum of its proper divisors (647633321210).

1221210300022 is a wasteful number, since it uses less digits than its factorization.

1221210300022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15219903.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1221210300022 its reverse (2200030121221), we get a palindrome (3421240421243).

The spelling of 1221210300022 in words is "one trillion, two hundred twenty-one billion, two hundred ten million, three hundred thousand, twenty-two".