1012102121021 has 8 divisors (see below), whose sum is σ = 1026436961088. Its totient is φ = 997769500000.

The previous prime is 1012102120969. The next prime is 1012102121057. The reversal of 1012102121021 is 1201212012101.

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 1012102121021 - 2¹⁸ = 1012101858877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012102120987 and 1012102121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012102121071) 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, 374846 + ... + 1471296.

It is an arithmetic number, because the mean of its divisors is an integer number (128304620136).

Almost surely, 2^{1012102121021} is an apocalyptic number.

It is an amenable number.

1012102121021 is a deficient number, since it is larger than the sum of its proper divisors (14334840067).

1012102121021 is a wasteful number, since it uses less digits than its factorization.

1012102121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109523.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012102121021 its reverse (1201212012101), we get a palindrome (2213314133122).

The spelling of 1012102121021 in words is "one trillion, twelve billion, one hundred two million, one hundred twenty-one thousand, twenty-one".