121210201011211 has 16 divisors (see below), whose sum is σ = 131830478478720. Its totient is φ = 110775193027200.

The previous prime is 121210201011169. The next prime is 121210201011217. The reversal of 121210201011211 is 112110102012121.

It is not a de Polignac number, because 121210201011211 - 2¹⁵ = 121210200978443 is a prime.

It is a super-2 number, since 2×121210201011211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210201011217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42416701 + ... + 45184033.

It is an arithmetic number, because the mean of its divisors is an integer number (8239404904920).

Almost surely, 2^{121210201011211} is an apocalyptic number.

121210201011211 is a deficient number, since it is larger than the sum of its proper divisors (10620277467509).

121210201011211 is a wasteful number, since it uses less digits than its factorization.

121210201011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800806.

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

Adding to 121210201011211 its reverse (112110102012121), we get a palindrome (233320303023332).

The spelling of 121210201011211 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred one million, eleven thousand, two hundred eleven".