1221101223010 has 8 divisors (see below), whose sum is σ = 2197982201436. Its totient is φ = 488440489200.

The previous prime is 1221101222959. The next prime is 1221101223061. The reversal of 1221101223010 is 103221011221.

It is an interprime number because it is at equal distance from previous prime (1221101222959) and next prime (1221101223061).

It can be written as a sum of positive squares in 2 ways, for example, as 1217242204369 + 3859018641 = 1103287^2 + 62121^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61055061141 + ... + 61055061160.

Almost surely, 2^{1221101223010} is an apocalyptic number.

1221101223010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221101223010 is a deficient number, since it is larger than the sum of its proper divisors (976880978426).

1221101223010 is a wasteful number, since it uses less digits than its factorization.

1221101223010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122110122308.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1221101223010 its reverse (103221011221), we get a palindrome (1324322234231).

The spelling of 1221101223010 in words is "one trillion, two hundred twenty-one billion, one hundred one million, two hundred twenty-three thousand, ten".