1221002022110 has 32 divisors (see below), whose sum is σ = 2366914822272. Its totient is φ = 450822113280.

The previous prime is 1221002022067. The next prime is 1221002022181. The reversal of 1221002022110 is 112202001221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10834955 + ... + 10947065.

It is an arithmetic number, because the mean of its divisors is an integer number (73966088196).

Almost surely, 2^{1221002022110} is an apocalyptic number.

1221002022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221002022110 is a deficient number, since it is larger than the sum of its proper divisors (1145912800162).

1221002022110 is a wasteful number, since it uses less digits than its factorization.

1221002022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195908.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221002022110 its reverse (112202001221), we get a palindrome (1333204023331).

The spelling of 1221002022110 in words is "one trillion, two hundred twenty-one billion, two million, twenty-two thousand, one hundred ten".