121000102002021 has 64 divisors (see below), whose sum is σ = 185939916180480. Its totient is φ = 69220075184640.

The previous prime is 121000102002019. The next prime is 121000102002029. The reversal of 121000102002021 is 120200201000121.

It is not a de Polignac number, because 121000102002021 - 2¹ = 121000102002019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121000102001988 and 121000102002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000102002029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1705704865 + ... + 1705775801.

It is an arithmetic number, because the mean of its divisors is an integer number (2905311190320).

Almost surely, 2^{121000102002021} is an apocalyptic number.

121000102002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121000102002021 is a deficient number, since it is larger than the sum of its proper divisors (64939814178459).

121000102002021 is a wasteful number, since it uses less digits than its factorization.

121000102002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80866.

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

Adding to 121000102002021 its reverse (120200201000121), we get a palindrome (241200303002142).

The spelling of 121000102002021 in words is "one hundred twenty-one trillion, one hundred two million, two thousand, twenty-one".