1000010210121 has 48 divisors (see below), whose sum is σ = 1558351581696. Its totient is φ = 614292150528.

The previous prime is 1000010210117. The next prime is 1000010210179. The reversal of 1000010210121 is 1210120100001.

It is a happy number.

It is not a de Polignac number, because 1000010210121 - 2² = 1000010210117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000010210191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 212630056 + ... + 212634758.

It is an arithmetic number, because the mean of its divisors is an integer number (32465657952).

Almost surely, 2^{1000010210121} is an apocalyptic number.

It is an amenable number.

1000010210121 is a deficient number, since it is larger than the sum of its proper divisors (558341371575).

1000010210121 is a wasteful number, since it uses less digits than its factorization.

1000010210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7582 (or 7579 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000010210121 its reverse (1210120100001), we get a palindrome (2210130310122).

The spelling of 1000010210121 in words is "one trillion, ten million, two hundred ten thousand, one hundred twenty-one".