210121120101 has 16 divisors (see below), whose sum is σ = 280818627840. Its totient is φ = 139752553920.

The previous prime is 210121120093. The next prime is 210121120117. The reversal of 210121120101 is 101021121012.

210121120101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210121120101 - 2³ = 210121120093 is a prime.

It is a super-2 number, since 2×210121120101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121120301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242671 + ... + 2334483.

It is an arithmetic number, because the mean of its divisors is an integer number (17551164240).

Almost surely, 2^210121120101 is an apocalyptic number.

It is an amenable number.

210121120101 is a deficient number, since it is larger than the sum of its proper divisors (70697507739).

210121120101 is a wasteful number, since it uses less digits than its factorization.

210121120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93596.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210121120101 its reverse (101021121012), we get a palindrome (311142241113).

The spelling of 210121120101 in words is "two hundred ten billion, one hundred twenty-one million, one hundred twenty thousand, one hundred one".