1012001012021 has 16 divisors (see below), whose sum is σ = 1069677100800. Its totient is φ = 954774417600.

The previous prime is 1012001011961. The next prime is 1012001012041. The reversal of 1012001012021 is 1202101002101.

It is a cyclic number.

It is not a de Polignac number, because 1012001012021 - 2¹⁰ = 1012001010997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012001011993 and 1012001012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012001012041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4344836 + ... + 4571826.

It is an arithmetic number, because the mean of its divisors is an integer number (66854818800).

Almost surely, 2^{1012001012021} is an apocalyptic number.

It is an amenable number.

1012001012021 is a deficient number, since it is larger than the sum of its proper divisors (57676088779).

1012001012021 is a wasteful number, since it uses less digits than its factorization.

1012001012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227980.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012001012021 its reverse (1202101002101), we get a palindrome (2214102014122).

The spelling of 1012001012021 in words is "one trillion, twelve billion, one million, twelve thousand, twenty-one".