1000221121010 has 128 divisors (see below), whose sum is σ = 1943441869824. Its totient is φ = 369307238400.

The previous prime is 1000221120961. The next prime is 1000221121069. The reversal of 1000221121010 is 101211220001.

It is a junction number, because it is equal to n+sod(n) for n = 1000221120982 and 1000221121000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1172591744 + ... + 1172592596.

It is an arithmetic number, because the mean of its divisors is an integer number (15183139608).

Almost surely, 2^{1000221121010} is an apocalyptic number.

1000221121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000221121010 is a deficient number, since it is larger than the sum of its proper divisors (943220748814).

1000221121010 is a wasteful number, since it uses less digits than its factorization.

1000221121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000221121010 its reverse (101211220001), we get a palindrome (1101432341011).

The spelling of 1000221121010 in words is "one trillion, two hundred twenty-one million, one hundred twenty-one thousand, ten".