121001221211 has 8 divisors (see below), whose sum is σ = 130315128384. Its totient is φ = 111688188480.

The previous prime is 121001221199. The next prime is 121001221279. The reversal of 121001221211 is 112122100121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001221711) 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, 84350 + ... + 499116.

It is an arithmetic number, because the mean of its divisors is an integer number (16289391048).

Almost surely, 2^121001221211 is an apocalyptic number.

121001221211 is a deficient number, since it is larger than the sum of its proper divisors (9313907173).

121001221211 is a wasteful number, since it uses less digits than its factorization.

121001221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437221.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121001221211 its reverse (112122100121), we get a palindrome (233123321332).

The spelling of 121001221211 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, two hundred eleven".