1000121210121 has 8 divisors (see below), whose sum is σ = 1454721760224. Its totient is φ = 606134066720.

The previous prime is 1000121210119. The next prime is 1000121210129. The reversal of 1000121210121 is 1210121210001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000121210121 - 2¹ = 1000121210119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000121210097 and 1000121210106.

It is not an unprimeable number, because it can be changed into a prime (1000121210129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15153351636 + ... + 15153351701.

It is an arithmetic number, because the mean of its divisors is an integer number (181840220028).

Almost surely, 2^{1000121210121} is an apocalyptic number.

1000121210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000121210121 is a deficient number, since it is larger than the sum of its proper divisors (454600550103).

1000121210121 is a wasteful number, since it uses less digits than its factorization.

1000121210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30306703351.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1000121210121 its reverse (1210121210001), we get a palindrome (2210242420122).

The spelling of 1000121210121 in words is "one trillion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".