1012020210121 has 8 divisors (see below), whose sum is σ = 1019449398240. Its totient is φ = 1004591633568.

The previous prime is 1012020210079. The next prime is 1012020210137. The reversal of 1012020210121 is 1210120202101.

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 1012020210121 - 2³⁷ = 874581256649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012020213121) 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, 3485290 + ... + 3764476.

It is an arithmetic number, because the mean of its divisors is an integer number (127431174780).

Almost surely, 2^{1012020210121} is an apocalyptic number.

It is an amenable number.

1012020210121 is a deficient number, since it is larger than the sum of its proper divisors (7429188119).

1012020210121 is a wasteful number, since it uses less digits than its factorization.

1012020210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305783.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012020210121 its reverse (1210120202101), we get a palindrome (2222140412222).

The spelling of 1012020210121 in words is "one trillion, twelve billion, twenty million, two hundred ten thousand, one hundred twenty-one".