121201021211 has 8 divisors (see below), whose sum is σ = 126621759600. Its totient is φ = 115863042400.

The previous prime is 121201021189. The next prime is 121201021231. The reversal of 121201021211 is 112120102121.

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-121201021211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201021231) 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, 20686901 + ... + 20692758.

It is an arithmetic number, because the mean of its divisors is an integer number (15827719950).

Almost surely, 2^121201021211 is an apocalyptic number.

121201021211 is a deficient number, since it is larger than the sum of its proper divisors (5420738389).

121201021211 is a wasteful number, since it uses less digits than its factorization.

121201021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41379789.

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

Adding to 121201021211 its reverse (112120102121), we get a palindrome (233321123332).

The spelling of 121201021211 in words is "one hundred twenty-one billion, two hundred one million, twenty-one thousand, two hundred eleven".