210121122101011 has 32 divisors (see below), whose sum is σ = 242064440524800. Its totient is φ = 180383654674080.

The previous prime is 210121122100991. The next prime is 210121122101021. The reversal of 210121122101011 is 110101221121012.

It is not a de Polignac number, because 210121122101011 - 2¹⁷ = 210121121969939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121122101021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86229966 + ... + 88633228.

It is an arithmetic number, because the mean of its divisors is an integer number (7564513766400).

Almost surely, 2^{210121122101011} is an apocalyptic number.

210121122101011 is a deficient number, since it is larger than the sum of its proper divisors (31943318423789).

210121122101011 is a wasteful number, since it uses less digits than its factorization.

210121122101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404639.

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

Adding to 210121122101011 its reverse (110101221121012), we get a palindrome (320222343222023).

The spelling of 210121122101011 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred one thousand, eleven".