10012121120021 has 8 divisors (see below), whose sum is σ = 10784169628320. Its totient is φ = 9264582088272.

The previous prime is 10012121120003. The next prime is 10012121120231. The reversal of 10012121120021 is 12002112121001.

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 10012121120021 - 2¹⁴ = 10012121103637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012121119978 and 10012121120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012121125021) 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, 6127368290 + ... + 6127369923.

It is an arithmetic number, because the mean of its divisors is an integer number (1348021203540).

Almost surely, 2^{10012121120021} is an apocalyptic number.

It is an amenable number.

10012121120021 is a deficient number, since it is larger than the sum of its proper divisors (772048508299).

10012121120021 is a wasteful number, since it uses less digits than its factorization.

10012121120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254738275.

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

Adding to 10012121120021 its reverse (12002112121001), we get a palindrome (22014233241022).

The spelling of 10012121120021 in words is "ten trillion, twelve billion, one hundred twenty-one million, one hundred twenty thousand, twenty-one".