2021101200121 has 8 divisors (see below), whose sum is σ = 2028227408064. Its totient is φ = 2013984125040.

The previous prime is 2021101200101. The next prime is 2021101200137. The reversal of 2021101200121 is 1210021011202.

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 2021101200121 - 2⁵ = 2021101200089 is a prime.

It is a super-2 number, since 2×2021101200121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021101200101) 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, 1839685 + ... + 2725186.

It is an arithmetic number, because the mean of its divisors is an integer number (253528426008).

Almost surely, 2^{2021101200121} is an apocalyptic number.

It is an amenable number.

2021101200121 is a deficient number, since it is larger than the sum of its proper divisors (7126207943).

2021101200121 is a wasteful number, since it uses less digits than its factorization.

2021101200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566431.

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

Adding to 2021101200121 its reverse (1210021011202), we get a palindrome (3231122211323).

It can be divided in two parts, 2021101 and 200121, that added together give a palindrome (2221222).

The spelling of 2021101200121 in words is "two trillion, twenty-one billion, one hundred one million, two hundred thousand, one hundred twenty-one".