1210011000121 has 16 divisors (see below), whose sum is σ = 1534154388480. Its totient is φ = 926884936080.

The previous prime is 1210011000073. The next prime is 1210011000227. The reversal of 1210011000121 is 1210001100121.

It is a cyclic number.

It is not a de Polignac number, because 1210011000121 - 2⁹ = 1210010999609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210011000098 and 1210011000107.

It is not an unprimeable number, because it can be changed into a prime (1210011000421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133168581 + ... + 133177666.

It is an arithmetic number, because the mean of its divisors is an integer number (95884649280).

Almost surely, 2^{1210011000121} is an apocalyptic number.

1210011000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210011000121 is a deficient number, since it is larger than the sum of its proper divisors (324143388359).

1210011000121 is a wasteful number, since it uses less digits than its factorization.

1210011000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266346324.

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

Adding to 1210011000121 its reverse (1210001100121), we get a palindrome (2420012100242).

The spelling of 1210011000121 in words is "one trillion, two hundred ten billion, eleven million, one hundred twenty-one", and thus it is an aban number.