1001201221010 has 16 divisors (see below), whose sum is σ = 1880517076416. Its totient is φ = 383068293168.

The previous prime is 1001201220997. The next prime is 1001201221049. The reversal of 1001201221010 is 101221021001.

It is a junction number, because it is equal to n+sod(n) for n = 1001201220982 and 1001201221000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176524164 + ... + 2176524623.

It is an arithmetic number, because the mean of its divisors is an integer number (117532317276).

Almost surely, 2^{1001201221010} is an apocalyptic number.

1001201221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001201221010 is a deficient number, since it is larger than the sum of its proper divisors (879315855406).

1001201221010 is a wasteful number, since it uses less digits than its factorization.

1001201221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353048817.

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

Adding to 1001201221010 its reverse (101221021001), we get a palindrome (1102422242011).

The spelling of 1001201221010 in words is "one trillion, one billion, two hundred one million, two hundred twenty-one thousand, ten".