2121001202101 has 8 divisors (see below), whose sum is σ = 2137296683808. Its totient is φ = 2104707306000.

The previous prime is 2121001202069. The next prime is 2121001202113. The reversal of 2121001202101 is 1012021001212.

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 2121001202101 - 2⁵ = 2121001202069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121001205101) 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, 2362666 + ... + 3134356.

It is an arithmetic number, because the mean of its divisors is an integer number (267162085476).

Almost surely, 2^{2121001202101} is an apocalyptic number.

It is an amenable number.

2121001202101 is a deficient number, since it is larger than the sum of its proper divisors (16295481707).

2121001202101 is a wasteful number, since it uses less digits than its factorization.

2121001202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792803.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2121001202101 its reverse (1012021001212), we get a palindrome (3133022203313).

The spelling of 2121001202101 in words is "two trillion, one hundred twenty-one billion, one million, two hundred two thousand, one hundred one".