21012202000121 has 8 divisors (see below), whose sum is σ = 21139377646464. Its totient is φ = 20885042474080.

The previous prime is 21012202000087. The next prime is 21012202000147. The reversal of 21012202000121 is 12100020221012.

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 21012202000121 - 2¹⁴ = 21012201983737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21012202000096 and 21012202000105.

It is not an unprimeable number, because it can be changed into a prime (21012202000421) 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, 1410125 + ... + 6634218.

It is an arithmetic number, because the mean of its divisors is an integer number (2642422205808).

Almost surely, 2^{21012202000121} is an apocalyptic number.

It is an amenable number.

21012202000121 is a deficient number, since it is larger than the sum of its proper divisors (127175646343).

21012202000121 is a wasteful number, since it uses less digits than its factorization.

21012202000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060151.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21012202000121 its reverse (12100020221012), we get a palindrome (33112222221133).

The spelling of 21012202000121 in words is "twenty-one trillion, twelve billion, two hundred two million, one hundred twenty-one", and thus it is an aban number.