2021210000121 has 16 divisors (see below), whose sum is σ = 2973036850560. Its totient is φ = 1213484426880.

The previous prime is 2021210000093. The next prime is 2021210000149. The reversal of 2021210000121 is 1210000121202.

It is an interprime number because it is at equal distance from previous prime (2021210000093) and next prime (2021210000149).

It is not a de Polignac number, because 2021210000121 - 2⁷ = 2021209999993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021210000097 and 2021210000106.

It is not an unprimeable number, because it can be changed into a prime (2021210000171) 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, 632021541 + ... + 632024738.

It is an arithmetic number, because the mean of its divisors is an integer number (185814803160).

Almost surely, 2^{2021210000121} is an apocalyptic number.

It is an amenable number.

2021210000121 is a deficient number, since it is larger than the sum of its proper divisors (951826850439).

2021210000121 is a wasteful number, since it uses less digits than its factorization.

2021210000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264046336.

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

Adding to 2021210000121 its reverse (1210000121202), we get a palindrome (3231210121323).

It can be divided in two parts, 202 and 1210000121, that multiplied together give a palindrome (244420024442).

The spelling of 2021210000121 in words is "two trillion, twenty-one billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.