121012220211 has 16 divisors (see below), whose sum is σ = 161902540800. Its totient is φ = 80398712288.

The previous prime is 121012220179. The next prime is 121012220221. The reversal of 121012220211 is 112022210121.

It is a cyclic number.

It is not a de Polignac number, because 121012220211 - 2⁵ = 121012220179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012220221) 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, 1341550 + ... + 1428908.

It is an arithmetic number, because the mean of its divisors is an integer number (10118908800).

Almost surely, 2^121012220211 is an apocalyptic number.

121012220211 is a deficient number, since it is larger than the sum of its proper divisors (40890320589).

121012220211 is a wasteful number, since it uses less digits than its factorization.

121012220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88938.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121012220211 its reverse (112022210121), we get a palindrome (233034430332).

The spelling of 121012220211 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred eleven".