121232111021 has 8 divisors (see below), whose sum is σ = 139480857600. Its totient is φ = 103215832848.

The previous prime is 121232110939. The next prime is 121232111057. The reversal of 121232111021 is 120111232121.

It is a happy number.

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-121232111021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232111071) 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, 58115981 + ... + 58118066.

It is an arithmetic number, because the mean of its divisors is an integer number (17435107200).

Almost surely, 2^121232111021 is an apocalyptic number.

It is an amenable number.

121232111021 is a deficient number, since it is larger than the sum of its proper divisors (18248746579).

121232111021 is a wasteful number, since it uses less digits than its factorization.

121232111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116234203.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121232111021 its reverse (120111232121), we get a palindrome (241343343142).

The spelling of 121232111021 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred eleven thousand, twenty-one".