1000121211010 has 16 divisors (see below), whose sum is σ = 1817696028096. Its totient is φ = 396164518128.

The previous prime is 1000121210981. The next prime is 1000121211049. The reversal of 1000121211010 is 101121210001.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 485494704 + ... + 485496763.

It is an arithmetic number, because the mean of its divisors is an integer number (113606001756).

Almost surely, 2^{1000121211010} is an apocalyptic number.

1000121211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000121211010 is a deficient number, since it is larger than the sum of its proper divisors (817574817086).

1000121211010 is a wasteful number, since it uses less digits than its factorization.

1000121211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970991577.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000121211010 its reverse (101121210001), we get a palindrome (1101242421011).

The spelling of 1000121211010 in words is "one trillion, one hundred twenty-one million, two hundred eleven thousand, ten".