1221101021122 has 8 divisors (see below), whose sum is σ = 1831854917376. Its totient is φ = 610482715332.

The previous prime is 1221101021051. The next prime is 1221101021123. The reversal of 1221101021122 is 2211201011221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221101021096 and 1221101021105.

It is not an unprimeable number, because it can be changed into a prime (1221101021123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33875098 + ... + 33911125.

It is an arithmetic number, because the mean of its divisors is an integer number (228981864672).

Almost surely, 2^{1221101021122} is an apocalyptic number.

1221101021122 is a deficient number, since it is larger than the sum of its proper divisors (610753896254).

1221101021122 is an equidigital number, since it uses as much as digits as its factorization.

1221101021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67795232.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1221101021122 its reverse (2211201011221), we get a palindrome (3432302032343).

Subtracting 1221101021122 from its reverse (2211201011221), we obtain a palindrome (990099990099).

The spelling of 1221101021122 in words is "one trillion, two hundred twenty-one billion, one hundred one million, twenty-one thousand, one hundred twenty-two".