121131232021111 has 8 divisors (see below), whose sum is σ = 130450147408224. Its totient is φ = 111812477820960.

The previous prime is 121131232021067. The next prime is 121131232021133. The reversal of 121131232021111 is 111120232131121.

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

It is a cyclic number.

It is not a de Polignac number, because 121131232021111 - 2⁷ = 121131232020983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131232021411) 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, 38733691 + ... + 41743996.

It is an arithmetic number, because the mean of its divisors is an integer number (16306268426028).

Almost surely, 2^{121131232021111} is an apocalyptic number.

121131232021111 is a deficient number, since it is larger than the sum of its proper divisors (9318915387113).

121131232021111 is a wasteful number, since it uses less digits than its factorization.

121131232021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80593481.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 121131232021111 its reverse (111120232131121), we get a palindrome (232251464152232).

The spelling of 121131232021111 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-two million, twenty-one thousand, one hundred eleven".