2012001021021 has 8 divisors (see below), whose sum is σ = 2682850792480. Its totient is φ = 1341242631792.

The previous prime is 2012001020983. The next prime is 2012001021059. The reversal of 2012001021021 is 1201201002102.

It is an interprime number because it is at equal distance from previous prime (2012001020983) and next prime (2012001021059).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2012001021021 - 2¹⁹ = 2012000496733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012001020988 and 2012001021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012001021091) 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, 22794166 + ... + 22882263.

It is an arithmetic number, because the mean of its divisors is an integer number (335356349060).

Almost surely, 2^{2012001021021} is an apocalyptic number.

It is an amenable number.

2012001021021 is a deficient number, since it is larger than the sum of its proper divisors (670849771459).

2012001021021 is a wasteful number, since it uses less digits than its factorization.

2012001021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45691115.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2012001021021 its reverse (1201201002102), we get a palindrome (3213202023123).

It can be divided in two parts, 201200 and 1021021, that added together give a palindrome (1222221).

The spelling of 2012001021021 in words is "two trillion, twelve billion, one million, twenty-one thousand, twenty-one".